Improving the reliability of measurement results when studying the reliability of building structures with the ultrasound pulse method under production conditions

IF 0.1 Q4 INSTRUMENTS & INSTRUMENTATION Ukrainian Metrological Journal Pub Date : 2022-06-30 DOI:10.24027/2306-7039.2.2022.263875
Y. Serikov, L. Nazarenko
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Abstract

The extension of service life of operating building constructions requires a study of the current state of materials in their structural elements. The statement of the problem determines that such studies should be carried out using non-destructive methods, among which the ultrasonic pulsed method is one of the most effective ones. Its effectiveness lies in the efficiency of obtaining measurement data and their sufficient accuracy, as well as in comparative complexity of the measurement process. As a rule, the measurement of the required parameters of the ultrasonic signal is carried out in the presence of vibration interference generated by equipment, vehicles. Such obstacles are elastic waves that propagate in the material of the building object under consideration. As a result, vibration interference is imposed on the information ultrasonic signal. This leads to false measurement results, which can cause an error in estimating the current state of physical and mechanical properties of the material under consideration. Ultrasonic measuring instruments produced in Ukraine and abroad do not have protection from such vibration interference. To solve this problem, technical solutions have been recently developed based on the use of reference values of the controlled parameter of the ultrasonic signal; amplification of the information signal directly in the place of its fixation; and on the analysis of an array of information signals with the use of special software products for their statistical processing. However, the use of such technical solutions does not allow solving the problem completely. In order to solve the problem completely, the following solution was developed. The ideology of the measurement process includes the emission of ultrasonic probing signals and the reception of information signals at two fixed frequencies.
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在生产条件下用超声脉冲法研究建筑结构可靠性时,提高测量结果的可靠性
延长运营建筑结构的使用寿命需要研究其结构元件中材料的现状。问题的陈述决定了此类研究应使用非破坏性方法进行,其中超声脉冲方法是最有效的方法之一。它的有效性在于获得测量数据的效率及其足够的准确性,以及测量过程的相对复杂性。通常,超声波信号所需参数的测量是在设备、车辆产生振动干扰的情况下进行的。这种障碍物是在所考虑的建筑物体的材料中传播的弹性波。结果,振动干扰被施加在信息超声波信号上。这会导致错误的测量结果,这可能会导致在估计所考虑材料的物理和机械性能的当前状态时出错。乌克兰和国外生产的超声波测量仪器没有受到此类振动干扰的保护。为了解决这个问题,最近已经开发了基于超声波信号的受控参数的参考值的技术解决方案;直接在信息信号的固定位置放大信息信号;以及利用特殊软件产品对信息信号阵列进行统计处理的分析。然而,使用这种技术解决方案并不能完全解决问题。为了彻底解决这个问题,开发了以下解决方案。测量过程的思想包括发射超声波探测信号和接收两个固定频率的信息信号。
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Ukrainian Metrological Journal
Ukrainian Metrological Journal INSTRUMENTS & INSTRUMENTATION-
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