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The reason most structures fail isn’t due to shoddy material or violent impact. It’s something far simpler, smaller and even dull: prolonged, low-amplitude fatigue.
A FEASIBILITY STUDY ON USE OF GENERIC MOBILE LASER SCANNING SYSTEM FOR DETECTING ASPHALT PAVEMENT CRACKS
Mobile Laser Scanning Point Cloud Pavement Crack Automated Detection Urban Road
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2016/7/5
This study aims to automatically detect pavement cracks on urban roads by employing the 3D point clouds acquired by a mobile laser scanning (MLS) system. Our method consists of four steps: ground poin...
DETECTION OF CRACKS IN PAVED ROAD SURFACE USING LASER SCAN IMAGE DATA
Paved Road Surface Crack Detection Laser Scan Image Background Subtraction Image Segmentation
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2016/7/5
In the current study, we developed a methodology for detecting cracks in the surface of paved road using 3D digital surface model of road created by measuring with three-dimensional laser scanner whic...
Automated Pavement Imaging Program (APIP) for Pavement Cracks Classification and Quantification - a Photogrammetric Approach
APIP Image processing Photogrammetry Pavement distress Cracks Potholes Delaminatons
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2015/12/16
The evaluation of pavement conditions is an important part of pavement management. Traditionally, pavement condition data are gathered by human inspectors who walk or drive along the road to assess th...
The propagation speed of the cracks in coal body containing gas
Coal body Gas Crack Propagation speed
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2012/4/12
The destabilization of coal body containing gas that is caused by the quick propagation of the cracks in coal body containing gas and the high pressure gas, which result into coal and gas outburst. Th...
Singular stress fields for transverse cracks in multi-layer satin woven CFRP composite laminates under cryogenic conditions
Fracture Mechanics Finite Element Method Composite Material
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2010/11/25
The objective of this research is to analyze the singular stresses at the tips of cracks in multi-layer woven carbon fiber reinforced polymer (CFRP) composite laminates under tension at cryogenic temp...
An Axisymmetric Infinite Cylinder with Two Cracks and a Rigid Inclusion
Axisymmetric Infinite cylinder Penny-shaped crack Rigid inclusion Stress intensity factor
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2009/10/9
This work considers the analysis of a cracked infinite cylinder with a rigid inclusion. The material of the cylinder is assumed to be linearly elastic and isotropic. The ends of the infinite cylinders...
Cracks in high-manganese cast steel
Hadfield cast steel Hot cracking Solidification brittleness
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2011/4/1
The reasons which account for the formation of in service cracks in castings made from Hadfield steel were discussed. To explain the source of existence of the nuclei of brittle fractures, the proper...
A study on fatigue crack propagation in longitudinal stiffeners of ship structures-An analysis of multiple cracks propagation in 3-dimensional stiffened panel structures
fatigue crack propagation longitudinal stiffeners ship structures 3-dimensional stiffened panel structure
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2009/4/30
In ship structures, fatigue cracks may initiate at the intersection between face plates of the longitudinals and web stiffeners attached to the transverse girders. These cracks may propagate in web pl...
Relationships between Internal Cracks and Strains during High Temperature Drying of Sugi Boxed-Heart Square Timbers
high temperature drying strain gauge internal crack internal strain tensile stress
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2009/3/6
Internal strains in sugi (Cryptomeria japonica D. DON) boxed-heart square timbers were measured by using strain gauges during high temperature drying above 100°C. We discuss relationships between inte...
Dynamic stress intensity factors around two cylindrical cracks in an infinite elastic medium subject to impact load
Stress intensity factor Two cylindrical cracks Transient stresses
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2010/9/27
Dynamic stresses are solved for two cylindrical cracks in an infinite elastic medium. Incident shock stress waves pass through the elastic medium normal to the cracks’ axis. In the Laplace transform d...
CAUSE IDENTIFICATION OF FATIGUE CRACKS IN PLATE GIRDER-ON-STEEL FRAME PIER BRIDGE
plate girder steel frame pier fatigue crack finite element method
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2008/12/26
The purpose of this study is to identify the causes of fatigue cracks found in a plate girder-on-steel frame pier bridge. The complexities of this type of structure make the stress configurations nea...
Purpose: Cannon is one of the most usage parts in military industries and analysis of its pipe is very important. Therefore, the prediction of its longevity to say, the number of cannon ball that can ...
Bridge future: $100M question: Chronic cracks found in Patroon Island span may require new structure
Bridge transportation
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2007/1/23
Jan. 14--ALBANY -- The state Department of Transportation, hustling for years to stem a persistent problem with cracks in the steel of the Patroon Island Bridge, is considering replacing the massive s...