[KSCI] Korea Science Citation Index Service

Development of Self-compensated Technique for Evaluation of Surface-breaking Crack by Using Laser Based Ultrasound

Choi, Sang-Woo (Research Institute of Mechanical Technology, Pusan National University)
Lee, Joon-Hyun (School of Mechanical Engineering, Pusan National University)
Cho, Youn-Ho (School of Mechanical Engineering, Pusan National University)

Publication Information

Journal of the Korean Society for Nondestructive Testing / v.25, no.3, 2005 , pp. 215-221 More about this Journal

Abstract

It is required to evaluate nondestructively depth of surface-breaking cracks in structures. In this paper, the self-compensated technique by laser-based ultrasound is used to measure the depth of surface-breaking defect. Optical generation of ultrasound produces a well defined pulse with reliable frequency content. It is broad banded and suitable for measurement of attenuation and scattering over a wide frequency range. The self-calibrated signal transmission data of surface wave shows good sensitivity as a practical tool far assessment of surface-breaking defect depth. It is suggested that the relationship between the signal transmission and crack depth can be used to predict the surface-breaking crack depths in structures.

Keywords

laser based ultrasound; surface-breaking cracks; self-compensated techniques; nondestructive evaluation; signal transmission;

Citations & Related Records

Reference

1	A Study on the Guided Wave Mode Conversion using Self-calibrating Technique / [ Park, J.C.;Cho, Y.H. ] / Journal of KSNT
2	One-sided Stress Wave Measurement in Concrete / [ Popovics, J.S.;Lee, J.H.;Song, W.J.;Achenbach, J.D. ] / J. of Eng. Mechanics DOI
3	Using Compression Wave Ultrasonic Transducers to Measure the Velocity of Surface Waves and Hence Determine Dynamic Modulus of Elasticity for Concrete / [ Qixian, L.;Bungey, J.H. ] / Construction and Building Materials DOI
4	Quantitative Studies of Thermally Generated Elastic Waves in Laser-Irradiated Metals / [ Scruby, C.B.;Dewhurst, R.J.;Hutchins, D.A.;Palmer, S.B. ] / J. Appl. Phys. DOI
5	Pulse-Velocity Techniques and Equipment for Testing Concrete / [ Whitehurst, E.A. ] / Proceeding of the Highway Research Board
6	Detection of the Depth of a Surface-Breaking Crack Using Transient Elastic Waves / [ Wu, T.T.;Fang, J.S.;Liu, P.L. ] / Journal of Acoustic Society of America DOI
7	Determination of Elastic Constants of a Concrete Specimen Using Transient Waves / [ Wu, T.T.;Fang, J.S.;Liu, G.Y.;Kuo, M.K. ] / Journal of the Acoustical Society of America DOI
8	Self-Calibrating Ultrasonic Technique for Crack Depth Measurement / [ Achenbach, J.D.;Komsky, I.N.;Lee, Y.C.;Angel, Y.C. ] / Journal of Nondestructive Evaluation DOI
9	An Automated Method for the One-sided Measurement of Longitudinal and Surface Wave Velocities in Concrete / [ Lee, J.H.;Song, W.J.;Popovics, J.S.;Achenbach, J.D. ] / Proceedings of the Korea Concrete Institute
10	Application of One-sided Stress Wave Velocity Measurement Technique to Evaluate Freeze-Thaw Damage in Concrete / [ Lee, J.H.;Park, W.S. ] / Review of Progress in Quantitative Nondestructive Evaluation
11	An Instrument and a Technique for Field Determination of Modulus of Elasticity and Flexural Strength of Concrete Pavements / [ Long, B.G.;Kurtz, H.J.;Sandenaw, T.A. ] / Journal of the American Concrete Institute