Ill EXECUTIVE SUMMARY IV

Ultrasonic pulse frequency tungsten inert gas welding technology was adopted to join Ti-22Al-25Nb alloy. There were some cracks in the alloy weld joint after post-weld heat treatment. The hardness and Young’s modulus of α 2 , O, β /B2 phases examined with an situ nanoindentation technique. phase transition stresses three different analyzed explain why occur during results show that mean is high...

Room-temperature welding with gallium is regarded as a new strategy because of the low melting point and its affinity for forming intermetallic compounds other metals. Benefitting from liquid gallium-based solder an ultrasonic drive, establishment Cu/Cu diffusion-bond connections can be quickly completed. The underlying characteristics weld quality room-temperature bonding were preliminarily cl...

Ultrasonic techniques have been used for many years for the inspection of rail. These measurements can detect the presence of a wide variety of defects but there are practical difficulties with the technology. While large transverse cracks of the type likely to cause catastrophic failure can be detected, the large, critical defects can be masked by large numbers of small, surface defects along ...

This work deals with the design and in-house operational results of a novel Automated Ultrasonic Inspection System (ASCIS) for studless chain links with diameter ranging from 111 to 185 mm, conceived and developed by INTERLAB Ingeniería Electrónica (IIE) for VICINAY Cadenas, a major industry devoted to manufacture of chains for both the shipbuilding industry and offshore exploration. The system...

INTRODUCTION Automation of ultrasonic testing procedures is a kind of non-destructive testing procedures, which is involves the use of both longitudinal and transverse high-frequency sound waves for the exploration and/or mapping of both surface and sub-surface defect or irregularities. Of course the material thickness or the material loss (corrosions/ erosions) can also be observed by the conc...