Practical Wave-Guide Methods for AE Testing of High/Low-Temperature Vessels Using Ordinary Sensors

Three wave-guide rods including disc-rod,cap-rod and flexible rod were designed so as to test high/ low-temperature vessels using ordinary AE sensors.For some special conditions,some support/fixed members protruded from insulation and welded to vessel shells can be directly used as wave-guide rods,and water-ice coupling cm be adopted in AE testing of cryogenic monolayer vessels.A lot of field testing practice shows that those recommended wave-guide methods are economical,simple,and practical,they meet the needs of AE testing of most high/low-temperature vessels using ordinary sensors.