The longitudinal cracks along bond line and the transverse cracks which cut across the weld metal cross section inside weld metal were formed, while X65 pipe line steel was welding.
But this photoresist was then peeled off, leaving only a pure metal on metalbond.
但是这种光刻胶会被剥离，仅留下金属结合。
3
The defect testing and strength estimating of metal to metal single step-lap adhesive bond structures are studied by means of acoustic emission (AE) technique.