Characteristic Evaluation on Bolt Stress by Ultrasonic Nondestructive Methods. (27th September 2015)

• Record Type: Journal Article
• Authors: Pan, Qinxue; Liu, Shuai; Li, Xiao; Xu, Chunguang
• Other Names: Vilar Rui Academic Editor.
• Is Part Of: Advances in materials science and engineering. Volume 2015(2015)
• Publication Date: 2015-09-27
• Subjects: Materials science -- Periodicals; Materials science; Periodicals; 620.11
• DOI: 10.1155/2015/134090
• Languages: English
• ISSNs: 1687-8434

Abstract

Abstract : Based on the acoustoelasticity theory, a certain relationship exists between ultrasonic velocity and stress. By combining shear and longitudinal waves, this paper provides a nondestructive method of evaluating axial stress in a tightened bolt. For measuring the bolt axial stress in different situations, such as under low or high loads, this paper provides guidelines for calculating the stress for a given load factor. Experimental and calculated results were compared for three bolt test samples: an austenitic stainless steel bolt (A2-70) and low-carbon steel 4.8 and 8.8 bolts. On average, the experimental results were in good agreement with those obtained through calculations, thus providing a nondestructive method for bolt stress measurements.