Limpar
322.462 resultados

Acesso aberto

Tipo do recurso

Tipo de base de dados

Ano de criação

Produção nacional

Revisado por pares

Áreas

Idioma

Editores

Artigo Revisado por pares

Miaomiao Zhang, Jingtao Zhong, Changhong Zhou, Xiaoyang Jia, Xingyi Zhu, Baoshan Huang,

... be attributed to the limitation of commonly used crack features, i.e., the crack area, which is defined based on human experience and may not fully capture the crack information relevant to pavement structural conditions. To address ... oriented method that utilizes the autoencoder to extract crack features (called encoded features) from pavement crack images, thus linking pavement cracks to their corresponding structural conditions. The original crack images (128*128 pixels) are compressed into the ... is therefore a more accurate representation of pavement cracks. On this basis, random forests (RF) classifiers were ...

Tópico(s): Concrete Corrosion and Durability

2024 - Elsevier BV | Engineering Applications of Artificial Intelligence

Livro

Springer Link

Primary Document Acesso aberto

Smith, Horace Wemyss, Cadwalader, John,

Introduction -- A reply to Genl. Joseph Reed's Remarks on a late publication ... / General John Cadwalader, Philadelphia, 1783 -- Valley Forge letters, as pub. in ...

0000 - Gale Group | Sabin

Artigo Revisado por pares

Kewei Hu, Zheng Chen, Hanwen Kang, Yunchao Tang,

... concrete buildings. Consequently, research into automated, high-precision crack detection methods remains pivotal within the realm of ... on two-dimensional (2D) image-based algorithms for crack detection. However, these methods commonly struggle to accurately locate the three-dimensional (3D) coordinates of cracks on large structures and to extract the 3D contours of cracks. To address this challenge, this study proposes an automated 3D crack detection system for structures based on high-precision ... of the sensors. Secondly, the lightweight MobileNetV2_DeepLabV3 crack semantic segmentation network was employed to detect and ...

Tópico(s): Concrete Corrosion and Durability

2024 - Elsevier BV | Automation in Construction

Imagens Acesso aberto

Photograph by Charles Rickerby Taken from the Studies of Fisher Life - Dundee Album Number 2. Royal Photographic Society/NMeM/ Science & Society Picture Library. ...

0000 - Gale Group | NCCO Photography

Artigo Revisado por pares

Zhongqi Shi, Nan Jin, Dongbo Chen, Dihao Ai,

Automated crack segmentation from digital imagery is crucial for infrastructure health monitoring via non-destructive evaluation techniques. However, accurately capturing complex, multi-branch crack patterns remains challenging. This paper presents a comparative ... learning models – UNet, FPN, PSPNet, and DeepLabV3 – for crack segmentation from video data. Various encoder backbones, including ... examined under manual and automatic compression loading conditions. Cracks were induced in cement-based materials via a ...

Tópico(s): Asphalt Pavement Performance Evaluation

2024 - Elsevier BV | Construction and Building Materials

Jornais Acesso aberto

John Huxley, Stephen Dodgson, Clovie Keith, Barbara Hall, G Eyles, Joan Bakewell, David Ellis, Ray Danby, Mike Graham, Paul Nelson, Helena Kennedy, Alexandra Frean, Clive Farr, Rob Hughes, James Brechin, John Peter, Andrew Grice Political Correspondent, Deirdre Fernard, Mark Reason, Michael Donaghy, Duncan Fallowell, Bemard Cafferty, Eric Dymock, Norman MacRae, Tom Carter, Christopher Somerville, Tim Raymont, Danby Bloch, Graham Rose, Nicolette Jones, Simon Turner, Robert Burchfield, David Smith, Nick Oswald, Steve Clarke, Nick Way, Stephen Milligan, Marten Julian, Mark Hosenball, Edward Welsh, Aoife O'Brien, E. Jane Dickson, Ginny Dougary, Geordie Greig, Patrick Stoddart, Barbara Hewson, Robert Sandall, Iain Johnstone, David Brierley, Irwin Stelzer, Neville Cross, Ivan Fallon, Robert Hewison, Deryk Brown, Mary Warnock, David Dougill, Delrdre Fernand, John Winkler, John Mortimer, Thomas Ross, Jim Fish Ljubljana, Jane Bird, Jane Digkson, Jain Johnstone, Hugh Canning, Margarette Driscoll, Lewis Peake, Jane Bird Technology Editor, Roy Anderson, Susan Crosland, David Cairns, Peter Kemp, Joe Simpson, James Graham, J Ellison, Robert Harris, Richard Need, George Perry, Dr Ion Stoica, Robin Marlar, C. S. Nicholls Editor, Roger Eglin, Steven Irvine, Paul Donovan, Maurice Chittondon, Janette Marshall, lain Jenkins, Alistair Horne, Jeff Randall, Graham D Sutherland, Jason Thomas, Fran Abrams, Paul Driver, R Walters, Martyn Baguley, David Hughes, Callum Henderson, Michael Durham Health Service Correspondent, Rufus Olins, Michael Durham, John Hopkins, Frank Delaney, Martin Jacques, Chris Mullin, Brian Walden, Helen Fielding, A Williams, Kate Saunders, Richard Weatherell, Malcolm Winton, James Wilson, Marie Colvin, Richard Cook, Diana Wright, G. Fitzgibbon, Andrew Lorenz Industrial Editor, Nik Cohn, Chris Partridge, Ronald Scholes, Stephen Jones, Stephen Thorpe, Brian Deer, Jenny Cuffe, Vicky Hayward, Digby Anderson, Christopher Hibbert, Martin Searby, John Steele, Ian Birrell, Polly Samson, Andrew Larenz Industrial Editor, Dilys Powell, James Coleman, Bruce Johnston Rome, Chris Jones, Andrew Hogg, Chris Peat, Bruce Johnston, Elizabeth Miller, Richard Woods, Clive Everton, Louise Branson, Robert Green, Frances Rafferty, Sandra Blakeslee, Marion Hume, Maurice Chittenden, Ian Dunning, David Hughes Chief Political Correspondent, Brian MacArthur, Michael Jones Political Editor, John Harrison, Roger Clarke, James Blitz, Edmund Nicholas, D J Taylor, Mihir Bose, Philip Beresford, Godfrey Smith, Paul Barker, Brian Glanville, Stan Levenson, Ann Longwell, R Eyles, Carmel McQuaid, John Carey, Antonia Fraser, J Cairns, Godfrey Golzen, Deirdre Fernand, Norman Tebbit, Andrew Lorenz, John Furbisher, David Wickers, Marina Vaizey, Chris Lightbown, D Macpherson, Jeff Randall City Editor, Hugh Pearman, Richard Caseby, Margaret Park, Angela Long, Frank Field, Penny Perrick, Tony Hetherington, Walter Ellis, Joanna Simon, Patricia McKeever, Iain Jenkins, Boris Schapiro,

... re Even Warned when the Air-Pressure Drops) Crack of Doom? The Searsh The Ultimate High, Then Ultimate Low Crack Users Washington today, London by 1991? Crack USA ...

1990 - Gale Group | Sunday Times HA GDA

Artigo Revisado por pares

Yuran Fan, Yi Shuai, Jian Shuai, Tieyao Zhang, Yi Zhang, Lei Shi, Ke Shan,

... of high-pressure pipeline, which is easy to crack under the combined action of internal and external ... the failure analysis of 6 welded joints with crack defects excavated on site in a gas transmission ... the relationship between root welding, weld microstructure and crack generation was analyzed in detail. The influence of grain boundary distribution behavior of weld microstructure on crack propagation path was studied, and the mechanism of welding inclusions on crack propagation and aggregation nucleation was revealed. The results ...

Tópico(s): Hydrogen embrittlement and corrosion behaviors in metals

2024 - Elsevier BV | Engineering Failure Analysis

Jornais Acesso aberto

Andrew Robson, Campbell Mitchell, Raymond Snoddy Media Editor, Charles Samek, David Charter Health Correspondent, Helen Studd, James Moore, Patricia Davies, Grace Bradberry, Gary Duncan, Harriet Dutton, Linda Tsang, David Rhys Jones, Philip Howard, Carol Midgley, Hilary Finch, Ronald D. Martin, David Chater, Jeremy Kingston, James Bone, Clive Davis, Gabrielle Starkey, Guy Mortimer, Andi Robertson, Geoff Brown, Raymond Snoddy, Joe Joseph, Giles Coren, John O'Leary Education Editor, Carl Evans, Pat Gibson, Valerie Elliott Countryside Editor, Hilton Dawson, Andrew Rowe, David McVay, Stewart Tendler Crime Correspondent, Jack Malvern, Dominic Walsh, Ruth Gledhill, Steve Bird, Jo Pearce, Alix Ramsay Tennis Correspondent, Peter Cameron, Dr Jane Collins, Ruth Gledhill Religion Correspondent, Martin Barrow, Libby Purves, Richard Ford Home Correspondent, Heather Nicholson, Alan Hamilton, Robin Young, Matt Sims, Anatole Kaletsky, James Landale Political Correspondent, Mary Dixon, Helen Rumbelow, Peter Barnard, Clive Mathieson Telecoms Correspondent, Patience Wheatcroft Business Editor, Caroline Merrell Banking Correspondent, Jackie Ballard, Angela Jameson, Graham Wood, Russell Kempson, Edward Fennell, Paul Armstrong, Rick Broadbent, Philip Webster and Valerie Elliott, Matt Dickinson Football Correspondent, Joel Bennathan, Jill Sherman Whitehall Editor, Gary Slapper, Adrian Brodkin, Nick Szczepanik and Gary Jacob, Simon de Bruxelles, Graham Harvey, Rob Wright, John Hopkins Golf Correspondent, Medea Frangoulis, Adam Jones, Ian Fells, Raymond Keene, Adam Sage, A. P. Whitehead, Angela Jameson and Sally Patten, Paul Wilkinson, Christine Buckley Industrial Editor, Greg Hurst Parliamentary Correspondent, Nigel Hawkes, Richard Owen, Christopher Martin-Jenkins Chief Cricket Correspondent, John Carr, Roger Boyes, Lewis Lesley, Richard Jones, Oliver August, Alan Shaw, Nick Hasell, David Hands Rugby Correspondent, Russell Jenkins and Valerie Elliott, Adam Fresco, Martin Fletcher European Correspondent, Patrick Butterly, Nick Szczepanik, James Doran, Philip Webster Political Editor, James Pringle, Gerald Larner, Matthew Parris, Julia Hardy, Mike Rosewell, L. L. Blake, Russell Jenkins, Fiona Bruce, Walter Gammie, Mark Court Health Industries Correspondent, Peter Riddell, Ben MacIntyre, Patience Wbeatcroft, Lea Paterson Economics Editor, Humphrey Burton, Catherine O'Brien, John Malpas, Michael Gove, Nicholas Goodison, Chairman, Ben Macintyre, Chris Ayres and Gary Duncan, David Sinclair, Lewis Stuart, Martin Waller, Michael Green, James Jackson, Carl Mortished International Business Editor, Nigel Hawkes Health Editor, Benedict Nightingale, Dr Thomas Stuttaford, Bill Edgar, Frances Gibb, Sam Kiley, Richard Morrison, John Howell, Adam Sherwin, Vince Wright, Tom Baldwin Deputy Political Editor, Michael Evans, John Phillips, Nigel Vinson, Alan Lee Racing Correspondent, Sally Patten, John Sinclair, Anthony Howard, Peter Roebuck, Sally Patten Retail Correspondent, Patience Wheatcroft, Christopher Irvine,

... forced march Police want new law to shut 'crack' dens Tesco offers discreet delivery Victim forced to ... no compelling case against calling a May election Crack Streets The drug horrors coming ever closer to ...

2001 - Gale Group | TDA

Artigo Acesso aberto Revisado por pares

Fangyan Nie, Mengzhu Liu, Pingfeng Zhang,

Abstract Crack formation is a common phenomenon in engineering structures, which can cause serious damage to the safety and ... of engineered structures is the prompt detection of cracks. Image threshold segmentation based on machine vision is a crucial technology for crack detection. Threshold segmentation can separate the crack area from the background, providing convenience for more accurate measurement and evaluation of the crack condition and location. The segmentation of cracks in complex scenes is a challenging task, and ...

Tópico(s): Industrial Vision Systems and Defect Detection

2024 - Nature Portfolio | Scientific Reports

Livro

ASTM International

Jornais Acesso aberto

Mohamed Sabi, Audrey Slaughter, John Shirley, Rosemary Righter, Clive Everton Snooker Correspondent of The Sunday Times, Sir Jack Longland, Adrian Room, Victoria Glendinning, Will Ellsworth-Jones, John Fryer, Mr Magdi Yacoub, Jack Evans Times Law Report, C Witten-Davies Archdeacon of Oxford, Clarence Johnson Headmaster, Jon Swain, Chris Ryder, Rob Hughes, John Peter, Jean Robertson Travel Editor, El Asnam, Michael Ward, John Wade, Doris Lessing, Graham Rose, Kent Barker, Jason Tomas, Cal McCrystal, Lord Harewood, Val Hennessy, Gerald Fitzgibbon, J. J. Maling Writer, Henry Brandon, John Coates, Peter Rodgers, Richard Milner, Bernard Levin, David Dougill, Richard Lawes Chester, Joe Irving, Derek Jewell, Robert Gittings, Peter Shore, Norman Harris, David Blundy, Frank Giles, Geoff Whitten, Peter Ackroyd, Reuben Ainsztein, Robert Troop, David Crewe, C. T., Malcolm Crawford Economics Editor, Roger Eglin, Michael Bilton, Andrew Cornelius, Michael Rosen, Mr Altair, George Rosie, Claire Tomalin, Ulick O'Connor, Judith Jackson, Richard Girling, Nicholas Carroll, John Fryer Labour Correspondent, John Hopkins, Philip Whitehead, Alex Raymond, Denis Herbstein, Thomas Pakenham, Hugo Young Political Editor, Mrs Whitehouse, Ian Robertson Our rugby correspondent, Stephen Pile, Malcolm Winton, Steve Bicknell, Peter Stothard, Ron McKay, Stephen Jones, Jeremy Brooks, Desmond Shawe-Taylor, Alan Brien, Russell Davies, Patrick Rowley, Ronald Butt, David Lipsey, Dilys Powell, Clive Branson, John Bell City Editor, Bill Cater, Brough Scott, Oliver Gillie, Felix Aprahamian, Ian Nairn, J W Lambert, Stephen Fay, David Steen, Mihir Bose, Peter Clarke, Godfrey Smith, Arianna Stassinopoulos, Peter Dear, Stephanie Thompson, Walter Eltis, Andrew Stephen, Brian Glanville, John Carey, Lesley Scott Ordish Hon Secretary, P J Snowden, Peter Dunn, Michael Roberts, James Fenton, Michael Green, Peter James, Michael Jones Political Correspondent, Roy Perrott, Arabella Boxer, Chris Lightbown, Marina Vaizey, Antonette Allsopp, Amir Taheri, Phillip Knightley, Magdi Yacoub, John Smith Journalist, Michael Parrott, R M Shields Managing Director, Pauline Peters, Patience Wheatcroft, Isabel Hilton, John Cairncross, Boris Schapiro,

... Rampton doctor: why I back brain operations Motorway crack-ups may end up in court Just one ... excellent ones, he found it a difficult task Crack the Code An American in the Family Geoffrey ...

1980 - Gale Group | Sunday Times HA GDA

Artigo Acesso aberto Revisado por pares

Zhenyang Gao, Xiaolin Zhang, Yi Wu, Minh‐Son Pham, Yang Lü, Cunjuan Xia, Haowei Wang, Hongze Wang,

... leads to catastrophic failures with limited resistance to crack propagation. In contrast, natural materials such as bones ... possess microstructures that give rise to spatially controllable crack path and toughened material resistance to crack advances. This study presents an approach that is ... cells that can spatially program the micro-scale crack behaviour. Machine learning is applied to provide an ... cells that offer advanced toughening functionality such as crack bowing, crack deflection, and shielding seen in natural ...

Tópico(s): Advanced Sensor and Energy Harvesting Materials

2024 - Nature Portfolio | Nature Communications

Jornais Acesso aberto

John Coleman, Barbara Hall, Elizabeth Patterson, McDonald, Esther Rantzen, John Jay City Editor, Shena MacKay, Tommy Long, John Peter, Rosemary Callender, Sir Alfred Sherman, Jonathan Miller, Ed Koch, Oscar Talibudeen, Jill Hartley, Christopher Smallwood Economics Editor, Roland Rench, Steve Winwood, Nick Rufford, Askold Krusheinycky, Neville Hodgkinson Medical Correspondent, Graham Rose, George Dearsley, John Stansell, Nicolette Jones, Mrs Mollie McCabe, Robin Oakley, Lars Persson, Sally Payne, Stephen Milligan, Michael Checkland, P S Falls, Roz Newby, Patricia Hewitt, Edward Barnes, Edward Welsh, Nicholas Crane, Michael Grade, Patrick Stoddart, Susan Marling, Robert Sandall, Anthony Sattin, John Newell, Peter Godwin, Robert Hewison, H J Meadows, David Dougill, Pink Floyd, Philip Beresford Industrial Editor, Richard Dunn, Ned Sherrin's, Maria Laura Avignolo, Egon Ronay, Susan Crosland, Peta Thomeycroft, Peter Kemp, Norman Harris, Simon Townsley, Michael Jones, Peter Hatch, M Kington, Richard Palmer Environment Correspondent, Paddy Ashdown, Dr Jane Chomet, George Perry, Sue Mott, Robin Marlar, Charlotte Atkins, Dr Alistair Ostell, Christine Toomey, Bernard Cafferty, Brian Moynahan, John Dankwort, Rachel Blunt, Jon Freeman, David Hartnett, Ben Okri, Bakewell's View, Kate Etheridge, Roger Hall, Jeff Randall, Conor Cruise O'Brien, Sheila Clayton, Malcolm Smith, Paul Driver, James Adams, Boris Schapiro, Austin MacCurtain, Tim Rayment, Shellfish Delight, Mazher Mahmood, Chris Bonington, Richard Girling, H Prowse, Elizabeth Grice, John Hopkins, Askold Krushelnycky, Judi Bevan, Jill Neville, Brian Walden, Michael Winner, Gareth David, Brian Reading, John Surtees, Simon Freeman, Stephen Pile, Peter Gartland, Jan Needle, Malcolm Winton, Richard Cook, Marie Colvin, Diana Wright, Amanda Courtney, Christopher Smallwood, Lawrence Freedman, John Wood's, Stephen Jones, Sally Brampton, Alan Brien, Martin Russell, Victoria Massey, David Carins, Keith Wheatley, Nick Rufford Science Correspondent, Patrick Rowley, Dilys Powell, Ben Pimlott, Tessa Blackstone, Brough Scott, Alison Beckett, Jenny Abramsky, Rupert Murdoch, Richard Woods, Jenny Newman, Louise Branson, William Rees-Mogg, David Gilmartin, Jill, Barrie Penrose, Dudley Doust, Felix Aprahamian, Caroline Anderson, David Hughes Political Correspondent, Brian MacArthur, Denna Jones Anderson, Michael Jones Political Editor, Bill Hunter, Corinne Reed, Mihir Bose, Christine L Paley, Philip Beresford, Victoria McKEE, Sue Thomas, Charles Oulton, Alan Jabez, Brian Glanville, Angus Roxburgh, Alan Jenkins, John Carey, Edward Pearce, Simon Jenkins, Jon Craig Home Affairs Correspondent, Patricia Mowbray, B Hodges, Caroline McGHIE, Keith Slinn, Michael Cockerell, Ian Williams, Valerie Grove, Marina Vaizey, Hugh Pearman, Doug Hall, Margaret Park, Rosemary Collins, Sir Geoffrey Pattie, Catherine Paver, Tony Hetherington, Laurence Lerner, Muriel Bowen,

... Islamic Propagation Centre International Dolphin Fitted Bathrooms Philips Crack City A Terrible Price for a Sharp Coat ... Truckers' Pickup and the Chicken Scratch Being a Crack Shot Means Checking your Guns A Life Broken ...

1988 - Gale Group | Sunday Times HA GDA

Artigo Acesso aberto Revisado por pares

Xinyue Wei, Chenzhuo Li, Cían McCarthy, John M. Kolinski,

... typically fail by growth and propagation of a crack from a surface flaw. This process is modelled ... stress field. This widely used theory applies for cracks that are planar, but cracks typically are not planar, and instead are geometrically ... linear elastic fracture mechanics. Here we characterize the crack tip kinematics of complex crack fronts in three dimensions using optical microscopy of ... the critical strain energy required to drive the crack is directly proportional to the geodesic length of the crack, which makes the sample effectively tougher. The connection ...

Tópico(s): Fatigue and fracture mechanics

2024 - Nature Portfolio | Nature Physics

Livro

ASTM International

Jornais Acesso aberto

Ruth Farnsworth, Robin Williams, Barbara Hall, Richard Ellis, James Dairymple, Jon Swain, Helen Davidson, Philip Norman, James Saynor, Grace Bradberry, Rob Hughes, John Peter, Andrew Grice Political Correspondent, Geoff Hinchliffe, Jonathan Miller, Eric Dymock, Firdaus Kanga, Robert Lindsay, Fiona Walsh, Susan d'Arcy, Peter Boylan Chair, Moby Dick, John Diamond, Frank Whitford, Graham Rose, Diana Wright Personal Finance Editor, Harriet Sergeant, Sally Payne, Lucy Hughes-Hallett, David Smith, Adam Nicolson, Nick Pitt, Kevin O'sullivan, Julian Symons, Frederic Raphael, Carol Sarler, Katie Ivens, E. Jane Dickson, Denise Winn, Geordie Greig, Tony Allen-Mills, Martin James, Robert Sandall, Iain Johnstone, Irwin Stelzer, Ivan Fallon, Deryk Brown, Anthony Harrison, David Dougill, Mark Fisher, Peter Reading, Cliff Temple, Ian Glover-James Diplomatic Correspondent, Stewart Purvis Editor-in-Chief, Tom Hastie, Harvey Porlock, Egon Ronay, Hugh Canning, Alasdair Reid, David Cairns, Nigel Tisdall, Peter Kemp, Marina Warner, Tony Mooney, David Reed, Robert Harris, Helen Zao, Peter Millar, Donald Whitworth, David Owen Director, George Perry, Sue Mott, Rose Shepherd, Robin Marlar, Phyllis Berman, Joe Klein, Harry Ritchie, Robin Harrison, Bernard Cafferty, Stuart Wavell, Paul Donovan, June Barraclough, David Stuart-Mogg, Gerald Kaufman, Martin Scott, Paul Driver, James Adams, Boris Schapiro, Richard Binns, David Hughes, Tim Rayment, Peter Plant, Ann Armstrong, Les Misérables, Dr M Holmes, David Lawrenson, Garth Crooks, Christopher Hope, Henry Turner, Helen Fielding, John Karter, Barbara Amiel, Richard Cook, Craig Brown, Diana Wright, Ruby Wax, Linda Brandon, Stephen Jones, Richard Evans, T J Binyon, Harry Mullan, Richard Palmer, Andrew Grice, Martin Searby, Ian Birrell, Dilys Powell, Andrew Hogg, David Selbourne, Gordon Burn, Maurice Chittenden, K Peterson, Mitchell Symons, Aileen Ballantyne Medical Correspondent, Brian Moore, Douglas Hurd, Rebecca Fowler, Michael Fitzpatrick, Julie Burchill, Greil Marcus, Andrew Yates, David Hunn, James Blitz, Clare Medwin, Mihir Bose, Dr David Butler, Andrew Alderson, Michael Prescott Home Affairs Correspondent, Charles Saatchi, Stan Levenson, Norman Macrae, Chris Dighton, Dennis Gunton, Lauren St John, Tony Moss, Andrew Lorenz, Liam Clarke, David Wickers, Chris Lightbown, Hugh Pearman, Andrew Davidson, Paula Reed, Angela Jones, Margaret Park, David Kerr, David Smith Economics Editor, Tony Hetherington, Peter Roebuck, Joanna Simon, Vernon Coleman, Desmond Hammerton, Deirdre McQuillan, James W Michaels, Iain Jenkins, Amanda De Cadenet, Bill McLaren, Georgina Howell,

... the Teflon Don Car Crime. Together We'll Crack It 'Crack kids' give America a new lesson in suffering ... Teasers The Funday Times Club Scribble Can You Crack the Cube? McDonalds Picture Gallery The Numskulls Michael' ...

1992 - Gale Group | Sunday Times HA GDA

Artigo Revisado por pares

Pengfei Jin, Zheng Liu, Haoruo Chen, Minghao Liu, Xin Wang, Xu Chen,

Although numerous fatigue crack growth (FCG) tests have been conducted, the conclusions drawn regarding the mixed-mode FCG rate are inconsistent and even contradictory. A reasonable conjecture is that crack driving force and crack closure effects may play a crucial role in ... compact-tension-shear (CTS) experiments. The influence of crack driving force and crack closure effect was analyzed and discussed. The results show that the crack propagation path tends to maximize the tangential stress component at the crack tip, and the effect of ΔKII can be ...

Tópico(s): Ultrasonics and Acoustic Wave Propagation

2024 - Elsevier BV | International Journal of Fatigue

Livro

ASTM International

Jornais Acesso aberto

Srikumar Sen, Boxing Correspondent, David Mallen, Frances Gibb, Legal Affairs Correspondent, John Biffen, Ian Gibson, Sheila Gunn, Nicholas Wood, Political Correspondent, Zahid Hussain, Simon Barnes, Diana Wildman, Richard Ford, Paul Vallely and Frances Gibb, Philip Webster, David Sapsted and John Young, Mark Souster and Patrick O'Hanlon, Michael Stevenson, Sally Brompton, Ian Murray, Michael Binyon, Mark Ellis, Carol Leonard, Stuart Jones Football Correspondent, Gerald Davies, Henry Gee, Jim Railton, Ruth Gledhill, Jamie Dettmer, Irish Affairs Correspondent, Andrew Billen Arts Correspondent, Mick Cleary, Libby Purves, Peter Waymark, Peter Bills, Rodney Cowton, Tony Dawe and Roland Rudd, Rosemary Unsworth, Christopher R Hill and Graham Rock, Jenny MacArthur, Martin Fletcher, Political Reporter, John Percival, F. W. G. Perryman, Edward Gorman, John Hennessy, John Young, Agriculture Correspondent, Jane Monahan, Simon Tait, Harvey Elliott, Air Correspondent, Christopher Walker and Andrew McEwen, George Rae, John Woodcock, Harry Debelius, Nicholas Harling, David Smith, Economics Correspondent, David Miller, Robin Oakley Political Editor, Robert Matthews Technology Correspondent, Tim Jones Employment Affairs Correspondent, Celia Brayfield, Wolfgang Münchau, John Higgins, Francis Bennion, John Bell and Susan MacDonald, Kerry Gill, Peter Davalle, Alan Lee, Cricket Correspondent, Nicholas Beeston, Raymond Keene, Chess Correspondent, Paul Griffiths, Richard S. Rowntree, Roland Rudd, Mark Herbert, Richard Evans Media Editor, Roy Dean, Barry Pickthall, John Bell City Editor, Bryan Appleyard, Geoffrey Foster, Derek Harris, Industrial Editor, Keith MacKlin, David Hands Rugby Correspondent, P. W. Allen, David Brewerton, Christopher Thomas, C. D. Elston, Christopher Walker, Jill Sherman Social Services Correspondent, Iain MacLeod, Jeremy Lever, David Simpson, Matthew Parris, Paul Newman, Sarah Jane Checkland Art Market Correspondent, Jack Lowe District General Manager, John Evans Acute Unit General Manager, Michael Seely, Alan Lee, Gerard Harrison, Daniel Ward, Michael Dynes, Michael Goldman, David Sinclair, Ian a Jack, Yoav Biran, Douglas Broom and David Tytler, Lucas Mellinger, Peter Strafford, Ewan Page Chairman, Derek Harris Industrial Editor, Susan MacDonald, Lee Rodwell, Pearce Wright, Science Editor, Harvey Elliott Air Correspondent, Lawless Bethune, Kate McDonald, Colin McQuillan, Rodney Lord Economics Editor, Mary Dejevsky, Robert Kilroy-Silk, Ivor Davis, Stuart Jones, Football Correspondent,

... London, Monday. Decmber 16,1861 Dons' pay talks Crack in the Ice Probation Report Canary Wharf Irish ... to structure calendar Squash Rackets Francis ready to crack whip Football: Newst Manager in League Plans to ...

1988 - Gale Group | TDA

Artigo Revisado por pares

Mingyang Ma, Lei Yang, Yanhong Liu, Hongnian Yu,

Detecting pavement cracks is a complex task in pavement maintenance. Convolutional neural network (CNN)-based approaches have been increasingly used for ... operates progressively across adjacent network layers, enabling the crack segmentation model to extract more global and detail features from the crack images. Additionally, a hybrid multiple attention (HMA) module ... could effectively capture the long-term dependence of crack features and enhance crack boundary detection. Moreover, proposed model employs a lightweight ...

Tópico(s): Concrete Corrosion and Durability

2024 - Elsevier BV | Measurement

Livro

ASTM International

Jornais Acesso aberto

Andrew Robson, Phil Yates, Raymond Snoddy Media Editor, Katherine Apps, Robert Cole, Andrew Pierce, DJM, Roland Watson and Stephen Farrell, Alan Hamilton and Steve Bird, Adam Sherwin Media Reporter, Tom Dyckhoff, Frances Gibb Legal Editor, Robert Thicknesse, Ars Longa, David Rhys Jones, Lucy Ellmann, Ivo Tennant, Michael Evans Defence Editor, Mr Justice Lightman, Philip Howard, Ian Cobain, Jennal Cox Fitness Editor, David Chater, Michael Binyon, James Bone, Nic Hopkins, Harry Bicket, Elizabeth Judge, Richard Brook, Ginny Dougary, Lucy Maggs, Ellen Knickmeyer, Patrick Barkham, John Bungey, Kevin Eason, Midge Fieldhouse, Geoff Brown, Joe Joseph, David Sharrock, Antonia Senior, Ben Webster Transport Correspondent, Allan Levy, QC, Tim Butcher, David Shamash, Debra Craine, Rory Watson, Nick Parker and David Charter, Dr Jane Collins, Angela Jameson Industrial Correspondent, Jon Hills-Jones, Dalya Alberge Arts Correspondent, Jonathan Gornall, Libby Purves, Phoebe Greenwood, Nicholas Blanford, Stephen Farrell, Allan T. Irvine, Robin Fry, Oliver Wright Health Correspondent, Sally Stewart, Jeremy Summers, Alan Hamilton, Michael Horsnell and Adam Sherwin, Anatole Kaletsky, Charles Bremner, Ron Lewis, Wesley Clark, Matt Dickinson Chief Football Correspondent, Mark Court, Caroline Merrell Banking Correspondent, Derwent May, Hugo Rifkind, Angela Jameson, Crispin Blunt, Russell Kempson, Robert Bathurst, David Rowan, Daniel McGrory, Tony Halpin Education Editor, Suzy Jagger, Oliver Kay, Jerome Burne, Edward Fennell, John O'byrne, Lisa Armstrong, Rick Broadbent, Stephen Burgen, Rosemary Bennett and David Lister, Stan Crowther, President, Phil Elston, Simon de Bruxelles, John Hopkins Golf Correspondent, Rob Wright, Celia Brayfield, Andrew Cockburn, Fiona Muxlow, David Todd, James Osbourn, David Powell Athletics Correspondent, Raymond Keene, Peter Allon, Chris Campling, Bronwen Maddox, Elinor Mills Abreu, Russell Hotten, David Pannick QC, Alice Blanchard, Peter Dixon, Nick Hasell, Ron Tate, David Hands Rugby Correspondent, Paul Simons, Hugo Robson, Graham Searjeant and Carl Mortished, John Allison, Rene Jacobs, Joanna Pitman, John Cooper, Philip Webster Political Editor, Melissa Kite Political Correspondent, Christopher Walker, Jane Shilling, Graham Searjeant Financial Editor, Chris McGrath, Russell Jenkins, Ingrid Mansell, Peter Riddell, Ben MacIntyre, Jenny Eclair, Michael Gove, Richard Beeston, Richard Beeston Diplomatic Editor, Michael Dynes, Lucia van der Post, Richard Miles, Martin Waller, Alan Coren, Carl Mortished International Business Editor, Nigel Hawkes Health Editor, Stephen Dalton, Gary Jacob Women's football, David Powell, Alyson Rudd, S. Fryer, Frances Gibb, Vince Wright, Peter Stainer, Anthony Howard, Jenny Davey, Red Priest, Alain Falys, Chief Executive, Robin Shepherd, Christopher Irvine, David Lister Ireland Correspondent,

... hostilities coming to a conclusion Picture Gallery Charcol Crack, crack. The body jumped, fell still and the American ...

2003 - Gale Group | TDA

Artigo Revisado por pares

Zongze Li, Yanfei Kang, Jinyang Fan, Marion Fourmeau, Jie Chen, Deyi Jiang, Daniel Nélias,

... nuclear waste repositories. Studying the healing of macroscopic cracks in salt rock under different conditions is important ... To evaluate the healing ability and effect of cracks in salt rock at the macroscale, two tests ... the tensile strength and permeability recovery of healed crack surface. Furthermore, the microstructure of the healed macroscopic ... is an important condition for the healing of cracks in salt rocks. Fully fractured salt rock cracks can heal at a low pressure of 160 ... found via computed tomography (CT) that a healed crack was still a weak surface in the whole ...

Tópico(s): Dam Engineering and Safety

2024 - Elsevier BV | Engineering Geology