Author:Loveday, Philip WDate:Mar 2006Guided wave ultrasonic inspection is becoming an important method of non-destructive testing for long, slender structures such as pipes and rails. Often it is desirable to use transducers that can strongly excite a specific mode of wave ...Read more
Author:Botha, LR; Van Heerden, SP; Prinsloo, FJDate:Sep 2006High pressure CO2 lasers are good candidates for amplifying picosecond mid infrared pulses. High pressure CO2 lasers are notorious for being unreliable and difficult to operate. In this paper a high pressure CO2 laser is presented based on ...Read more
Author:Loveday, Philip W; Long, Craig SDate:Mar 2007Piezoelectric transducers are commonly used to excite waves in elastic waveguides such as pipes, rock bolts and rails. While it is possible to simulate the operation of these transducers attached to the waveguide, in the time domain, using ...Read more