Ultrasonic Stress Measurement and Material Characterization in Pressure Vessels, Piping, and Welds

Author:

Bray Don E.1

Affiliation:

1. Don E. Bray, Inc., College Station, TX 77842-0315

Abstract

A pressure vessel has been constructed for demonstrating the LCR ultrasonic technique for indicating changes in wall and weld stress. A special contoured LCR probe was designed and constructed, and the pressure vessel was fitted with strain gauges for monitoring the wall stress. At low wall stresses, below 4 ksi (26 MPa), the ultrasonic data showed considerable scatter. There is similar scatter in the zero pressure travel-times at individual locations around the vessel. At wall stresses of 4 ksi (26 MPa) and above, however, there is an almost linear relationship of stress and travel-time change. Measurements adjacent to an end weld also showed very good trends. Plots of travel times approaching a weld predict −27.5 ksi (−190 MPa) at 1 in. (25 mm) from the weld, compared to zero stress at 5.6 in. (142 mm) away from the weld. These results are consistent with results obtained by others on a similar weld using the blind hole drilling method.

Publisher

ASME International

Subject

Mechanical Engineering,Mechanics of Materials,Safety, Risk, Reliability and Quality

Reference19 articles.

1. Avallone, E., and Baumeister, T., III, eds. 1987, Marks Standard Handbook for Mechanical Engineers, Ninth Edition, Secs. 5 and 8, McGraw-Hill Book Company, New York, NY.

2. Boresi, A. P., Sidebottom, O. M., Seely, F. B., and Smith, J. O., 1978, Advanced Mechanics of Materials, 2nd Edition, John Wiley and Sons, New York, NY.

3. Karlsson, L., Jonsson, M., Lindgren, L. E., Nasstrom, M., and Troive, L., 1989, “Residual Stresses and Deformations in a Welded Thin-Walled Pipe,” Weld Residual Stresses and Plastic Deformation, E. Rybicki and M. Shiratori, Contributing eds., Honolulu, Hawaii, ASME PVP-Vol. 173, pp. 7–11.

4. Huang, C. C., and Chuang, T. H., 1997, “Effects of Post-Weld Heat Treatments on the Residual Stress and Mechanical Properties of Laser Beam Welded SAE 4130 Steel Plates,” Mater. Manuf. Processes, 12, No. 5, pp. 779–797.

5. Thompson, R. B., Lu, W. Y., and Clark Jr., A. V., 1996, Handbook of Measurement of Residual Stress, eds., J. Lu, M. James, and G. Roy, Society for Experimental Stress Analysis, Bethel, Connecticut, Chap. 7, pp. 149–178.

Cited by 25 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3