一、前言我国超声检测换能器长期以来,未曾建立标准,多数缺少合理的技术指标,且检验上从电学角度考虑多,声学特性考虑少,而后者恰是评价换能器水平的主要技术参数。一般在测量方法上,多数被测换能器是与整个功能系统相关,即所谓相关系统,因而一些与换能器性能无关的随机因素常由此引入,使测量结果很难正确地反映换能器本身特性。本文提出一种非相关测量方法,能较正确地检验和评价换能器的特性。二、对换能器电声特性参数的要求为了能正确地描述换能器的特性,要求 First, the foreword China’s ultrasonic testing transducer has long been a standard, most of the lack of reasonable technical indicators, and the test from the electrical point of view more, less acoustic considerations, while the latter is the evaluation of the main technical parameters of the transducer level . Generally in the measurement method, most of the transducers tested are related to the entire functional system, the so-called correlation system. Therefore, some random factors unrelated to the performance of the transducers are often introduced so that the measurement results can hardly accurately reflect the transduction The characteristics of the device itself. This paper presents a non-correlation measurement method that can more accurately test and evaluate the transducer characteristics. Second, the acoustic parameters of the transducer requirements In order to correctly describe the transducer characteristics, requirements