To have a safe and reliable railway system, nondestructive testing (NDT) methods are necessary to be implemented in order to avoid catastrophic failures. NDT methods also provide a powerful tool for proper maintenance of valuable railway system assets. Among various NDT methods, ultrasonic testing (UT) along with magnetic particle testing (MPT) and eddy current testing (ECT) play significant ro...

Studies by Butt et al. in the developing fetus provide new and timely insights into the regulation of repair and fibrosis in the injured kidney. Using a clinically relevant model, they have examined the response of the medullary collecting duct to ureteral obstruction, with some unexpected findings.

The laser-ultrasonic technique is proposed for defect detection and residual stress measurement in friction stir welds (FSW). When combined with the synthetic aperture focusing technique (F-SAFT), very good performances are achieved for detecting lack of penetration in butt joints, the detection limit coinciding with the conditions of reduced mechanical properties. Also, the detection of kissin...

Abstract This paper presents a study on the performance of circumferentially butt‐welded steel connections under constant tensile‐tensile axial fatigue and cyclic bending tests. The utilizes fibre‐optic based distributed strain sensing to measure strains stresses in regions weld. results confirm desired pure specimen during cycles. suitability monitoring for testing welds is demonstrated. In ad...

Abstract Fatigue and corrosion are two material degradation phenomena that occur in welded steel structures. High-frequency mechanical impact (HFMI) treatment is a post-weld method aims to increase the fatigue strength of details. This paper investigates effect on efficiency this enhancing resistance. More than 150 test results corroded HFMI-treated details collected from several research artic...