Relevant bibliographies by topics / Crack depth measurement

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Crack depth measurement'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Crack depth measurement"

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Jung, Ju-Yeong, Hyuk-Jin Yoon, and Hyun-Woo Cho. "A Study on Crack Depth Measurement in Steel Structures Using Image-Based Intensity Differences." Advances in Civil Engineering 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/7530943.

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This paper seeks to propose an image-based noncontact testing method in crack depth measurement. To this end, it predicted the crack depth using the intensity values of cracks and verified its validity. To analyze the intensity values of cracks, eight stainless steel specimens with an increase in crack depths ranging from 0 to 17.5 mm at an average of 2.5 mm were fabricated, and a contrast index was attached to the center of the crack of the specimens painted with black matte spray for accurate analysis. Through various experiments, it was found that the intensity values of the cracks which de
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WOO, SANG-KYUN, YOUNG-CHUL SONG, and HONG-CHUL RHIM. "MEASUREMENT OF CRACK DEPTH LOCATED UNDER REINFORCEMENT IN REINFORCED CONCRETE SPECIMENS USING ULTRASONIC METHOD." Modern Physics Letters B 22, no. 11 (2008): 1019–24. http://dx.doi.org/10.1142/s0217984908015772.

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The objective of this study is to determine crack depth located under reinforcement in concrete specimens using ultrasonic method. Experimental studies were performed on concrete specimens containing vertical and inclined surface-opening cracks with known depths. Experimental results have shown that the crack depth can be effectively measured when the distance between the probes is less than the crack depth. The effect of reinforcement on crack depth estimation is studied through a model by considering P-wave diffraction at the tip of crack and reinforcement. In addition, experimental results
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Sarker, M. M., T. A. Ali, A. Abdelfatah, S. Yehia, and A. Elaksher. "A COST-EFFECTIVE METHOD FOR CRACK DETECTION AND MEASUREMENT ON CONCRETE SURFACE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-2/W8 (November 14, 2017): 237–41. http://dx.doi.org/10.5194/isprs-archives-xlii-2-w8-237-2017.

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Crack detection and measurement in the surface of concrete structures is currently carried out manually or through Non-Destructive Testing (NDT) such as imaging or scanning. The recent developments in depth (stereo) cameras have presented an opportunity for cost-effective, reliable crack detection and measurement. This study aimed at evaluating the feasibility of the new inexpensive depth camera (ZED) for crack detection and measurement. This depth camera with its lightweight and portable nature produces a 3D data file of the imaged surface. The ZED camera was utilized to image a concrete surf
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Shi, Bei-xiao, Cheng-feng Zheng, and Jin-kun Wu. "Research Progress on Expansive Soil Cracks under Changing Environment." Scientific World Journal 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/816759.

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Engineering problems shunned previously rise to the surface gradually with the activities of reforming the natural world in depth, the problem of expansive soil crack under the changing environment becoming a control factor of expansive soil slope stability. The problem of expansive soil crack has gradually become a research hotspot, elaborates the occurrence and development of cracks from the basic properties of expansive soil, and points out the role of controlling the crack of expansive soil strength. We summarize the existing research methods and results of expansive soil crack characteris
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Shi, Bei-xiao, Sheng-shui Chen, Hua-qiang Han, and Cheng-feng Zheng. "Expansive Soil Crack Depth under Cumulative Damage." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/498437.

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The crack developing depth is a key problem to slope stability of the expansive soil and its project governance and the crack appears under the roles of dry-wet cycle and gradually develops. It is believed from the analysis that, because of its own cohesion, the expansive soil will have a certain amount of deformation under pulling stress but without cracks. The soil body will crack only when the deformation exceeds the ultimate tensile strain that causes cracks. And it is also believed that, due to the combined effect of various environmental factors, particularly changes of the internal wate
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Lee, Yung-Chun, and Shi Hoa Kuo. "Depth Measurement of Surface-Breaking Cracks Using Point-Source/Point-Receiver Acoustic Transducer." Journal of Mechanics 19, no. 4 (2003): 425–29. http://dx.doi.org/10.1017/s1727719100003270.

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ABSTRACTA newly developed point-source/point-receiver (PS/PR) acoustic transducer is used for measuring the depth of surface-breaking cracks. The transducer consists of two miniature conical PZT elements which form a transmitter/receiver pair for generating and detecting surface waves. A tone-burst measurement system operates the PS/PR transducer at a fixed frequency. When a surface-breaking crack is present in between the transmitter and receiver, the change in time-of-flight of surface wave propagation caused by the crack is measured and used to estimate the crack depth. To verify the feasib
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Liu, H., M. Saka, H. Abe', I. Komura, and H. Sakamoto. "Analysis of Interaction of Multiple Cracks in a Direct Current Field and Nondestructive Evaluation." Journal of Applied Mechanics 66, no. 2 (1999): 468–75. http://dx.doi.org/10.1115/1.2791071.

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A method of analysis is proposed for nondestructive evaluation of multiple cracks by means of the d.c. (direct current) potential drop technique. Two and three-dimensional multiple cracks are treated. A methodology for considering interaction of cracks based on the equation for an isolated crack is given to calculate the potential drop between both sides of a crack in multiple cracking in a plate. The inverse problem to evaluate the crack depth is analyzed by comparing the potential drop calculated in this way with the measurement. It is shown that the evaluated crack depth is in good agreemen
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Abdul-Amir, Ahlam N., and Majid A. H. Abdul-Karim. "Microprocessor application to concrete crack depth measurement." Journal of Nondestructive Evaluation 6, no. 2 (1987): 67–72. http://dx.doi.org/10.1007/bf00568884.

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Černý, Ivo, and Jiří Sís. "Experimental Assessment of Residual Fatigue Life of High Pressure Pipeline Section Containing Longitudinal Cracks." Key Engineering Materials 713 (September 2016): 163–66. http://dx.doi.org/10.4028/www.scientific.net/kem.713.163.

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Non-destructive inspection of an operated section of DN 300 high pressure gas pipeline (internal diameter 300 mm) indicated a quite frequent occurrence of longitudinal cracks of depths up to 50 % of the pipe wall thickness. As such cracks would be very dangerous from the viewpoint of further pipeline operation, selected sections of the pipeline were taken from the ground for an experimental programme aimed at evaluation of residual fatigue life. The first part of the programme concerned (i) experimental calibration of direct current potential drop (DCPD) method of crack depth estimation, compl
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Anandika, R., J. Lundberg, and C. Stenström. "Phased array ultrasonic inspection of near-surface cracks in a railhead and its verification with rail slicing." Insight - Non-Destructive Testing and Condition Monitoring 62, no. 7 (2020): 387–95. http://dx.doi.org/10.1784/insi.2020.62.7.387.

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In this study, near-surface cracks in a railhead are inspected thoroughly using phased array ultrasonic testing (PAUT). This research finds an alternative technique to inspect for near-surface cracks because the conventional non-destructive testing method for rail inspection lacks the capacity to inspect the near-surface crack profile. This study shows that PAUT can determine not only the crack depth but also the near-surface crack profile, so that the inspector can estimate the stage of crack growth and how the crack propagates. This information is valuable to the rail maintainer as one of th
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Dissertations / Theses on the topic "Crack depth measurement"

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Arne, Kevin C. "Crack depth measurement in reinforced concrete using ultrasonic techniques." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51914.

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Concrete is the most widely used construction material in the world, so the assessment of damage in concrete is critical from the point of view of both safety and cost. Of particular interest are macro cracks that extend through the concrete cover of the reinforcement, which can potentially expose the reinforcement to corrosive elements. The high density of scatterers such as aggregate and voids in concrete makes quantitative imaging with coherent ultrasound difficult. As an alternative, this research focuses on diffuse energy based ultrasonic methods rather than coherent ultrasonic methods f
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Seher, Matthias Eugen. "Finite element simulation of crack depth measurements in concrete using diffuse ultrasound." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42751.

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Surface-breaking cracks pose a serious threat to the service life of concrete structures and health monitoring is presently conducted by a visual inspection method, yielding a potential risk to safety. Diffuse ultrasonic techniques have shown their potential as an ultrasonic technique for measuring crack depth in concrete and are currently under development. In this research, the finite element method (FEM) is employed to model the ultrasound diffusion in a concrete specimen. The objectives are to use the commercial finite element (FE) tool Ansys to develop the finite element model of a concre
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Lin, Sheng-Tung, and 林盛棟. "The Measurement of Crack Depth by Ultrasonics." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/94549373331993053607.

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碩士<br>元智大學<br>機械工程研究所<br>88<br>The capability of detecting defects inside the structures and on the surface such as cracks and voids, make the ultrasonics become the most common use of non-destructive examination technique. It is always difficulty to fabricate a real crack in the laboratory. Present investigation uses a finite width of artificial slot made by electrical discharge machining, to simulate the real crack. Five different methods of measuring the depth of surface crack are presented. The effects of frequency and incident angle on the measurement accuracy for these five methods are e
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Kee, Seong-Hoon. "Evaluation of crack depth in concrete using non-contact surface wave transmission measurement." Thesis, 2011. http://hdl.handle.net/2152/ETD-UT-2011-05-3047.

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The purpose of this study is to develop a non-contact air-coupled NDT method to identify and characterize surface-breaking cracks in concrete structures using surface wave transmission measurements. It has been found that the surface wave transmission (SWT) across a surface-breaking crack is related to the crack depth. However, inconsistence was noticed in surface wave transmission measurements. In this dissertation, the author first summarized limitations of the current SWT method for application to concrete structures, which include inconsistent sensor coupling, near-field effect of sensors,
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Liou, Tzonghao, and 劉宗豪. "Measurement of the depth of surface-opening cracks in reinforced concrete beams by stress wave propagation technique." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/88617504541012442764.

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碩士<br>國立中興大學<br>土木工程學系<br>84<br>With the success of the impact-echo method in determining the depth of surfaceopening cracks in slab-like structures or large members in which boundaries have minor effets on stress wave propagation, the study of this thesis aims at extendingthe application of stress wave progation technique to measure the depths of surface-opening cracks in reinforced concrete beams commonly used in bridge structures. Experimental studies were carried out on full-scale reinf
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Book chapters on the topic "Crack depth measurement"

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Lugg, M. C., W. D. Dover, and D. R. Parramore. "The A.C.F.M. Technique: Recent Advances in Crack Depth Measurement." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4615-7763-8_41.

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Ohara, Yoshikazu, Tsuyoshi Mihara, and Kazushi Yamanaka. "Nonlinear Ultrasonic Phased Array for Measurement of Closed-Crack Depth." In Springer Series in Measurement Science and Technology. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1461-6_5.

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Collins, R., D. H. Michael, and R. Clark. "Measurement of Crack Depth in a Transition Weld Using Acpd." In Review of Progress in Quantitative Nondestructive Evaluation. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-3344-3_70.

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Bennink, D. D., D. Knauss, T. Zhai, G. A. D. Briggs, and J. W. Martin. "Image Processing for the Measurement of Crack Depth using the Scanning Acoustic Microscope." In Acoustical Imaging. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2958-3_37.

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Zhai, T., D. D. Bennink, D. Knauss, G. A. D. Briggs, and J. W. Martin. "Depth Measurements of Short Cracks in Perspex with the Scanning Acoustic Microscope." In Acoustical Imaging. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2958-3_38.

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Ranjan, Rajeev. "Dynamic Behaviour and Crack Detection of a Multi Cracked Rotating Shaft using Adaptive Neuro-Fuzzy-Inference System." In Fuzzy Systems. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1908-9.ch062.

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The presence of crack changes the physical characteristics of a structure which in turn alter its dynamic response characteristics. So it is important to understand dynamics of cracked structures. Crack depth and location are the main parameters influencing the vibration characteristics of the rotating shaft. In the present study, a technique based on the measurement of change of natural frequencies has been employed to detect the multiple cracks in rotating shaft. The model of shaft was generated using Finite Element Method. In Finite Element Analysis, the natural frequency of the shaft was calculated by modal analysis using the software ANSYS. The Numerical data were obtained from FEA, then used to train through Adaptive Neuro-Fuzzy-Inference System. Then simulations were carried out to test the performance and accuracy of the trained networks. The simulation results show that the proposed ANFIS estimate the locations and depth of cracks precisely.
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RUDLIN, J. R., and R. KARE. "Crack Depth Measurement using an Advanced ACPD Technique on a Large Tubular Joint." In Impact of Non-Destructive Testing. Elsevier, 1990. http://dx.doi.org/10.1016/b978-0-08-040191-1.50028-x.

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Hirata, Takayoshi, and Taketo Uomoto. "Detection of ultrasonic pulse echo through steel bar in concrete crack depth measurement." In Non-Destructive Testing in Civil Engineering 2000. Elsevier, 2000. http://dx.doi.org/10.1016/b978-008043717-0/50041-6.

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DOYLE, P. A., and C. M. SCALA. "DEPTH MEASUREMENT FOR CORNER CRACKS USING RAYLEIGH WAVE SPECTRUM MODULATION." In Ultrasonics International 87. Elsevier, 1987. http://dx.doi.org/10.1016/b978-0-408-02348-1.50069-x.

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Yamaguchi, Testsuo, and Tatsuo Yamaguchi. "Measurements of thickness and crack depth in concrete by ultrasonic methods." In Non-Destructive Testing in Civil Engineering 2000. Elsevier, 2000. http://dx.doi.org/10.1016/b978-008043717-0/50035-0.

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Conference papers on the topic "Crack depth measurement"

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In, Chi Won, Jin-Yeon Kim, Laurence L. Jacobs, and Kimberly Kurtis. "Crack depth measurement in concrete using diffuse ultrasound." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION: Volume 31. AIP, 2012. http://dx.doi.org/10.1063/1.4716391.

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Popovics, J. S. "Crack Depth Measurement in Concrete Using Surface Wave Transmission." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION:Volume 22. AIP, 2003. http://dx.doi.org/10.1063/1.1570259.

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Dixiang, Chen, Pan Mengchun, and Luo Feilu. "Research of Crack Depth Detection Method Based on Frequency Scanning Technique." In 2007 8th International Conference on Electronic Measurement and Instruments. IEEE, 2007. http://dx.doi.org/10.1109/icemi.2007.4351026.

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Atto, Abdullahi, Marius Grigat, and Jens Voss. "Continuous Depth Sizing of ILI Ultrasonic Crack Detection." In 2016 11th International Pipeline Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/ipc2016-64409.

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Since the market launch of Ultrasonic crack detection tools, the conventional crack depth sizing is based on four depth classes or buckets. A more differentiated, continuous depth sizing is becoming increasingly relevant for the pipeline operators and especially for pipelines with large populations of planar anomalies (SCC colonies, lack-of-fusion in ERW seam-welds, etc.). The ILI industry is introducing a continuous crack depth sizing. Next to the better differentiation and the linearity of the depth reporting, the main advantage of the continuous depth sizing is the direct comparability to t
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Scala, C. M. "Laser ultrasonics for surface-crack depth measurement using transmitted near-field Rayleigh waves." In 26th Annual review of progress in quantitative nondestrictive evaluation. AIP, 2000. http://dx.doi.org/10.1063/1.1306068.

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Nakagawa, N. "Residual Crack Depth Estimation in Plates via Frequency Gradient Measurement of EC Impedance." In REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2005. http://dx.doi.org/10.1063/1.1916756.

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Salemi, A. H. "The effect of sensor lift-off on crack depth measurement by the Surface Magnetic Field Measurement technique." In QUANTITATIVE NONDESTRUCTIVE EVALUATION. AIP, 2002. http://dx.doi.org/10.1063/1.1472902.

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Klein, Marvin, Niels Portzgen, Munendra S. Tomar, Martin Fingerhut, and Homayoon Ansari. "Sizing Stress Corrosion Cracking Using Laser Ultrasonics." In 2008 7th International Pipeline Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/ipc2008-64468.

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Managing Stress Corrosion Cracking (SCC) damaged pipe has been a formidable challenge to the pipeline industry. Development of a practical solution for measurement and evaluation of SCC has been marred by the complexity of crack shapes, their distribution within a crack colony, and the lack of non-destructive technology capable of reliably measuring the crack depths. Laser Ultrasonics is an inspection technology wherein lasers are used for generation and detection of ultrasonic waves in the pipeline steel to be inspected. Unlike conventional ultrasonic testing, Laser Ultrasonics has a large fr
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Wada, Yoru, Kouichi Takasawa, Ryoji Ishigaki, Yasuhiko Tanaka, and Tadao Iwadate. "Measurement of Fatigue Crack Growth Rates for Steels in Hydrogen Storage." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77666.

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Fatigue crack growth rates (da/dN) in up to 90MPa high-pressure gaseous hydrogen environments of quenched and tempered low alloy Cr-Mo steel: JIS-SCM435 with ultimate tensile strength level of 950MPa were measured utilizing a cycle, ranging from 0.3sec from 1000sec long with a road ratio R = 0.1. The longer cycle time tests (15sec to 1000sec per cycle) were conducted utilizing internal pressure test apparatus by utilizing cylinder (= CY) specimens, while shorter cycle (0.3sec to 25sec per cycle) tests were performed utilizing fatigue test machine using compact tension (= C(T)) specimens. Crack
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Tada, Naoya, Makoto Uchida, Akira Funakoshi, and Hiroki Ishikawa. "Experimental Study of Three-Dimensional Identification of Semi-Elliptical Crack on the Back Surface by Means of Direct-Current Electrical Potential Difference Method of Multiple-Point Measurement Type." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26299.

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A method for identification of a semi-elliptical crack existing on the back surface of the material by means of direct-current electrical potential difference method of multiple-point measurement type was proposed. The geometry of the crack was given by the two-dimensional location of the crack center, the surface and inward angles of the crack, and the length and depth of the crack. The identification was carried out based on the distribution of potential difference on the surface. The related experiments were carried out using six metal plates with various semi-elliptical cracks made on the
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