For the chemical industry, the production of medium pressure vessels affects the development of the industry. Because the pressure vessel is prone to accidents if the internal pressure is too high in the production pr...For the chemical industry, the production of medium pressure vessels affects the development of the industry. Because the pressure vessel is prone to accidents if the internal pressure is too high in the production process, for a chemical enterprise, the production accident will bring the estimated loss of remedial classes. There are many reasons for accidents, most of which occur on pressure vessels. For example, the wear of pressure vessel components and improper operation of personnel will cause pressure leakage or explosion, resulting in safety accidents. Many industries need to know whether the performance of pressure vessels can meet the production standards. In this paper, various quality problems of pressure vessels on the market are analyzed and explored, hoping that some quality problems can be avoided in the production of pressure vessels, so as to reduce the occurrence of accidents and the loss of enterprises from the root. The main method discussed in this paper is to reduce the quality problems of pressure vessels with the help of nondestructive testing technology. Next, this paper introduces the distance and specific application of nondestructive testing technology in detail.展开更多
Nondestructive testing(NDT)is an advanced and commonly used technique in tunnel engineering quality inspection.To achieve good application of nondestructive testing technology,its main application in tunnel engineerin...Nondestructive testing(NDT)is an advanced and commonly used technique in tunnel engineering quality inspection.To achieve good application of nondestructive testing technology,its main application in tunnel engineering quality inspection strategy is analyzed,including the significance of applying nondestructive testing technology in tunnel engineering quality inspection,the main nondestructive testing technology applied in tunnel engineering quality test analysis,and the analysis of nondestructive testing technology of tunnel engineering quality inspection strategy.The analyses in this paper are done in hopes of providing scientific reference for the utilization of NDT technology and the improvement of tunnel engineering quality.展开更多
The underwater X-ray imaging technology development is significant to subaqueous target reconnaissance/detection/identification, subfluvial archaeology,submerged resource exploration, etc. As the core of X-ray imaging...The underwater X-ray imaging technology development is significant to subaqueous target reconnaissance/detection/identification, subfluvial archaeology,submerged resource exploration, etc. As the core of X-ray imaging detection, the scintillator has been plagued by inherent moisture absorption and decomposition, and strict requirements for seamless packaging and waterproofing.Here, we designed a manganese-doped two-dimensional(2D) perovskite scintillator modified by hydrophobic longchain organic amine through the combination of component and doping engineering. The modified perovskites show high water repellency that can be used as an underwater X-ray scintillator. X-ray images of aquatic organisms or other objects with a high spatial resolution of10 lp·mm^(-1) at a big view field(32 mm × 32 mm) were obtained by scintillation screen. This hydrophobic perovskite scintillator based on molecular design is of great promise in underwater X-ray nondestructive testing technology development.展开更多
文摘For the chemical industry, the production of medium pressure vessels affects the development of the industry. Because the pressure vessel is prone to accidents if the internal pressure is too high in the production process, for a chemical enterprise, the production accident will bring the estimated loss of remedial classes. There are many reasons for accidents, most of which occur on pressure vessels. For example, the wear of pressure vessel components and improper operation of personnel will cause pressure leakage or explosion, resulting in safety accidents. Many industries need to know whether the performance of pressure vessels can meet the production standards. In this paper, various quality problems of pressure vessels on the market are analyzed and explored, hoping that some quality problems can be avoided in the production of pressure vessels, so as to reduce the occurrence of accidents and the loss of enterprises from the root. The main method discussed in this paper is to reduce the quality problems of pressure vessels with the help of nondestructive testing technology. Next, this paper introduces the distance and specific application of nondestructive testing technology in detail.
文摘Nondestructive testing(NDT)is an advanced and commonly used technique in tunnel engineering quality inspection.To achieve good application of nondestructive testing technology,its main application in tunnel engineering quality inspection strategy is analyzed,including the significance of applying nondestructive testing technology in tunnel engineering quality inspection,the main nondestructive testing technology applied in tunnel engineering quality test analysis,and the analysis of nondestructive testing technology of tunnel engineering quality inspection strategy.The analyses in this paper are done in hopes of providing scientific reference for the utilization of NDT technology and the improvement of tunnel engineering quality.
基金financially supported by the National Natural Science Foundation of China (NSFC)(Nos.22175007 and 21975007)the National Natural Science Foundation for Outstanding Youth Foundation+1 种基金the Fundamental Research Funds for the Central Universities (No.YWF-22-K-101)the National Program for Support of Top-notch Young Professionals and the 111project (Nos.B14009)。
文摘The underwater X-ray imaging technology development is significant to subaqueous target reconnaissance/detection/identification, subfluvial archaeology,submerged resource exploration, etc. As the core of X-ray imaging detection, the scintillator has been plagued by inherent moisture absorption and decomposition, and strict requirements for seamless packaging and waterproofing.Here, we designed a manganese-doped two-dimensional(2D) perovskite scintillator modified by hydrophobic longchain organic amine through the combination of component and doping engineering. The modified perovskites show high water repellency that can be used as an underwater X-ray scintillator. X-ray images of aquatic organisms or other objects with a high spatial resolution of10 lp·mm^(-1) at a big view field(32 mm × 32 mm) were obtained by scintillation screen. This hydrophobic perovskite scintillator based on molecular design is of great promise in underwater X-ray nondestructive testing technology development.
