Ultrasonic inspection of multi-pass welds just after each welding pass, by means of guided waves at temperatures of up to 200 ºC.TEMATE IWW is designed to detect defects on multi-pass welds during the welding process. The system uses non-contact EMAT sensors to detect both surface and sub-surface defects on every pass immediately after it has been deposited on the part. The proprietary technique permits inspection at high temperatures without couplant, thus providing a very effective process control during welding that can eliminate or highly reduce expensive repairs on finished welds.