Acoustic Non-Destructive Testing Technology in Concrete Bridge Inspection and Pile Foundation Detection

This article takes the actual construction project of a certain concrete bridge project as an example to analyze the application of acoustic non-destructive testing technology in its detection.It includes an overview of a certain bridge construction project studied and acoustic non-destructive testing technology and the application of acoustic non-destructive testing technology in actual testing.This analysis hopes to provide some guidelines for acoustic non-destructive testing of modern concrete bridge projects.

Defect Inspection Technology for Steel Truss Suspension Bridges

Steel truss suspension bridges are prone to developing defects after prolonged use.These defects may include corrosion of the main cable or the steel truss.To ensure the normal and safe functioning of the suspension bridge,it is necessary to inspect for defects promptly,understand the cause of the defect,and locate it through the use of inspection technology.By promptly addressing defects,the suspension bridge’s safety can be ensured.The author has analyzed the common defects and causes of steel truss suspension bridges and proposed specific inspection technologies.This research is intended to aid in the timely discovery of steel truss suspension bridge defects.

Application of Non-Destructive Testing Technology in Quality Testing and Control of Water Conservancy Projects

In view of social development,the demand for water conservancy engineering applications continues to increase.The number and scale of water conservancy projects in China have been in a state of continuous expansion in recent years.As a result,how to achieve efficient testing and effective control of the quality of water conservancy projects has always been a topic of discussion in the field of water conservancy engineering in our country.This paper summarizes the application of non-destructive testing technology in the quality testing and control of water conservancy projects.On the basis of explaining the connotation and application advantages of non-destructive testing technology,the non-destructive testing application strategies for concrete strength,steel corrosion and shallow cracks in water conservancy projects were studied.

Discussion on the Status Quo of Non-Destructive Testing Technology in Highway Engineering and Strategies of Improving the Quality of Testing

Highway test and detection technology play a very important role in controlling the quality of road and bridge engineering and improving the maintenance of roads and bridges.The study of highway bridge test detection technology is both theoretically and practically useful.Road and bridge test and detection is a complicated task.With the development of science and technology,highway and bridge engineering test and detection technology has also made great progress.The continuous improvement of test and detection technology has brought good social benefits to road and bridge construction.This article discusses the problems in test and detection technology of highway bridges and how to improve the quality of test and detection.

Study of ultrasonic phased array inspection imaging technology for NDT

A research about the ultrasonic phased array imaging principle from A-scan signal to B-scan image for non-destructive testing （NDT） was conducted in this paper, the ultrasonic phased array inspection imaging system used in industrial field was developed and the experiment was performed on the steel testing block by the system with 64 elements, 5 MHz phased array transducer. Experimental results show that the flaws could be accurately detected and the flaws size could be estimated from the B-scan images, and the B-scan images could clearly show the location of the flaws, but the quality of B-scan images needs to be enhanced by digital signal processing and controlling dynamic focusing for improving the image resolution.

Design of a Submarine Pipeline Inspection Robot System Based on CT Technology

With the rapid development of submarine oil and gas,the security issues of submarine oil and gas pipeline become increasingly prominent,and regular inspection of submarine pipeline is particularly important.Therefore,a submarine pipeline inspection robot system based on CT technology to solve the problems such as low traditional manual inspection efficiency,high labor cost,low security and backward inspection methods.Based on the platform of ROV robot,carrying CT scanner as an external detection device,the system is used for non-invasive inspection of submarine pipeline,which is safe and harmless,with good economy,high mobility,and strong environmental adaptability.Compared with traditional technology,CT scanner’s external inspection technology used in the system avoids the damage to the external protective layer of the pipeline in the measurement of pipeline wall thickness.Meantime,it can provide the tomography of the pipe wall and the composition of the sediment material on the inside wall,which fills the gap in this technical field in China.According to the test,the robot has the characteristics of stable adsorption,flexible movement,and clear pipeline CT scanning image,and can realize the intelligent inspection of submarine pipeline.

Capacitive Imaging Technique for the Inspection of Composite Sucker Rod

Composite sucker rod has been extensively used due to its high strength, light weight and corrosion resistive nature. However, such composite sucker rod is diffcult for conventional non-destructive evaluation(NDE) techniques to inspect because of its complex material and/or structure. It is thus useful to embark research on developing novel NDE technique to comply the inspection requirement. This work demonstrates the feasibility of using the capacitive imaging(CI) technique for the inspection of composite sucker rod. Finite element(FE) models were constructed in COMSOL to simulate the detection of defects in the glass-fiber layer and on the carbon core surface. An FE Model based inversion method is proposed to obtain the profile of the carbon core. Preliminary CI experimental results are then presented, including the detection of surface wearing defect in the glass-fiber layer, and obtaining the profile of the carbon core. A set of accelerated aging experiments were also carried out and the results indicate that the CI technique is potentially useful in evaluating the ageing status of such composite sucker rod. The CI technique described in this work shows great potential to target some challenging tasks faced in the non-destructive evaluation of composite sucker rod, including quality control, defect detection and ageing assessment.

Laser ultrasonic testing for near-surface defects inspection of 316L stainless steel fabricated by laser powder bed fusion

The laser powder bed fusion(L-PBF)method of additive manufacturing(AM)is increasingly used in various industrial manufacturing fields due to its high material utilization and design freedom of parts.However,the parts produced by L-PBF usually contain such defects as crack and porosity because of the technological characteristics of L-PBF,which affect the quality of the product.Laser ultrasonic testing(LUT)is a potential technology for on-line testing of the L-PBF process.It is a non-contact and non-destructive approach based on signals from abundant waveforms with a wide frequency-band.In this study,a method of LUT for on-line inspection of L-PBF process was proposed,and a system of LUT was established approaching the actual environment of on-line detection to evaluate the method applicability for defects detection of L-PBF parts.The detection results of near-surface defects in L-PBF 316L stainless steel parts show that the crack-type defects with a sub-millimeter level within 0.5 mm depth can be identified,and accordingly,the positions and dimensions information can be acquired.The results were verified by X-ray computed tomography,which indicates that the present method exhibits great potential for on-line inspection of AM processes.

Common Type of Damages in Composites and Their Inspections

This paper is a short introduction to the common type of damages in composite structures and different ways of their inspection. Due to the high increase of interest in composite materials in past decades and their usage in different structures, there is a need to discuss the damage types in them along with different ways of inspection. This paper provides a short review of these facts in order to fill out the gap that there is in the literature. Major emphasis is placed on the damage types and their mechanisms and inspection methods, mostly focused on wave propagation based structural health monitoring (SHM).

Optical techniques in non-destructive detection of wheat quality:A review

Wheat quality detection is essential to ensure the safety ofwheat circulation and storage.The traditional wheat quality detection methods mainly include artificial sensory evaluation and physicochemical index analysis,which are difficult to meet the requirements for high accuracy and efficiency in modern wheat quality detection due to the disadvantages of subjectivity,destruction of sample integrity and low efficiency.With the rapid development of optical technology,various optical-based methods,using near-infrared spectroscopy technology,hyperspectral imaging technology and terahertz,etc.,have been proposed for wheat quality detection.These methods have the characteristics of nondestructiveness and high efficiency which make them popular in wheat quality detection in recent years.In this paper,various state-of-the-art optical-based techniques of wheat quality detection are analyzed and summarized in detail.Firstly,the principle and process of common optical non-destructive detection methods for wheat quality are introduced.Then,the optical techniques used in these detection methods are divided into seven categories,and the comparison of these technologies and their advantages and disadvantages are further discussed.It shows that terahertz technology is regarded as the most promising wheat quality detection method compared with other optical detection technologies,because it can not only detect most types of wheat deterioration,but also has higher accuracy and efficiency.Finally,the research of optical technology in wheat quality detection is prospected.The future research of optical technology-based wheat quality detection mainly includes the construction of wheat quality optical detection standardization database,the fusion of multiple optical detection technologies and multiple quality index information,the improvement of the anti-interference of optical technology and the industrialization of optical inspection technology for wheat quality.These studies are of great significance to improve the detection technology of wheat and ensure the storage safety of wheat in the future.

Enhancing Production Efficiency of Oil and Natural Gas Pipes Using Microwave Technology

The research reported in this paper aims at developing means of Non Destructive testing (NDT) to increase the line efficiency of pipe production in oil and natural gas pipe manufacturing plants using the Standard Allowed Minutes (SAM) method. Existing line production stations encounter difficulties in maintaining the recommended testing speed of smaller diameter pipe, due to limitations in the Visual Inspection (VI) station. We propose to implement one additional technique which will prevent the decline of line efficiency in a pipe production factory. The range of diameters identified as a problem in this research is from 254 mm to 762 mm. Microwave techniques are expected to improve the line efficiency by increasing the production of the plant. This happens as a consequence of maintaining the production rates of the identified pipe diameters, so that they equal the production output of the larger pipe diameters. We analyze the velocity traveled by the pipe through Radiographic Testing (RT) according to the VI output (production). The RT velocity is decreased for the diameters identified above, in order to maintain quality control and cover the shortcoming of the VI. The number of pipes produced is computed during shift hours of the factory and pipe lengths of the forming department are determined. We compare the output (production) of a series of NDT line stations with and without the microwave technique for the first of the three pipe cases considered in this study, classified as perfect pipe (PP), repair pipe (RP) and scrap pipe (SP). The velocity of RT stations analyzed in the paper ranges from 50 mm/s for larger diameter pipe, and decline to 16.667 mm/s for the identified diameters. The analytical calculations of line output (production) and line efficiency demonstrate the solution of this velocity problem after the microwave technique is introduced. It demonstrates that an economical and precise methodology to extend the production capability of the pipe plant has been determined.

医疗器械检验检测现状及发展趋势探索

目的该文旨在迎接我国医疗器械检验检测行业的新业态和新挑战,探索行业的未来发展方向。方法在概述医疗器械检验检测行业现状的基础上,采用专家访谈和线上问卷的方式,调研40家医疗器械检验检测机构及相关企事业单位,重点关注科技创新能力和形式、行业发展瓶颈等重要问题。结果通过整理和分析调研数据,得出行业发展的5个积极趋势:完善机构整体布局,加强区域特色中心建设;完善第三方合作研究组织和第三方评审机构的准入与监管机制;鼓励科技创新,优化人才队伍,赋能检验检测技术高质量发展;构建医疗器械安全监管信息化共享平台;加强在用医疗器械设备的安全监测。创新之处采用专家访谈和循证研究的方法,获取客观可靠的数据,为行业发展趋势的研究和探索提供了有力的依据。

基于机器视觉的飞机故障检查系统

针对当前飞机维修检查工作以人工目视检查为主、效率低且存在人为因素影响的情况,设计一套基于图像识别与机器深度学习的飞机部件表面无损检测系统。收集并整理了某航空公司一线飞机维修员拍摄的飞机机身及发动机部件图片,对图片集进行预处理,包括通道提取、Sobel滤波处理及二值化;最后用Blob分析对处理后的图像进行特征提取与系统分析。系统运行速度快、准确率高且可连续自动识别图像。利用机器视觉技术对飞机部件表面进行无损检测不仅可以提高生产效率,同时可以去除人为因素对航空器飞行安全的影响,使得飞机的飞行安全得到进一步提升。实践证明,该系统性能稳定可靠,具有极高的推广应用价值。

广东省认证认可检验检测产业存在的问题与对策

我国战略性新兴产业、八大高技术服务业之一、国家重点发展的认证认可检验检测产业迎来了良好的发展机遇。广东认证认可检验检测产业存在定位不准、全球价值链底端锁定、服务能力不强、国际竞争力弱、高质量技术创新不足、行业治理乱象、品牌影响力弱等问题,本文建议将认证认可检验检测上升为广东省战略性新兴产业,以技术创新驱动、高起点数字化发展、现代化技术促弯道超车,提高产能及服务能力、加强行业治理、以品牌促发展,占领产业制高点,使其成为广东省经济的重要引擎和新经济增长点,引领广东经济高质量发展。

人工智能在包装领域的应用及研究进展

采用文献研究和案例分析的方式,研究人工智能在包装领域中的应用现状,揭示人工智能在包装领域的巨大潜力。首先,对人工智能在包装设计方面的应用进行了阐述,利用人工智能算法进行包装设计优化、个性化包装等;其次,概述了人工智能在三类包装材料中的应用,利用人工智能算法预测及优化包装材料的性能等;最后,探讨了人工智能在包装质量检测方面和商品包装识别的应用,利用图像识别和深度学习技术进行包装质量检测和商品包装识别,提高包装检测的精确度和效率等。通过引入人工智能,包装质量检测和商品包装识别的效率和准确性得到提高,有效减少了由人为因素引起的失误。此外,人工智能在包装材料方面的应用也体现在性能预测与优化上,为推动包装行业的可持续发展提供了有力支持。人工智能不仅在提升设计效率方面发挥着重要作用,还能为包装设计师提供创意灵感。未来设计领域的主导趋势将是人机深度协作。

建筑幕墙装饰装修工程施工探讨

在当前建筑工程及技术水平高度发展的背景下,大众对各种建筑的功能性、装饰性与实用性的需求有所增高。这一点在建筑幕墙装饰装修工程中体现得十分明显。对此,通过探讨建筑幕墙工程施工中影响工程质量、工程效率的关键因素,总结能够用于建筑幕墙装饰装修工程的关键技术,提高工程建设效果的有效方法。

电梯检验中增强现实技术的应用分析

针对电梯检验中增强现实技术的应用进行相应分析,先阐述了增强现实技术的特点,如虚实物体配准和显示技术。然后根据电梯检测内容,提出了几点应用措施,主要包括设计电梯AR检修系统方案、电梯物联网技术、用户操作指导。这样不仅能促使电梯检验工作顺利开展,还能确保电梯稳定运行。

防爆工业车辆的防爆检测要求

广泛应用于爆炸危险场所的防爆工业车辆在工作过程中的潜在点燃源主要有电气漏电、高温热表面、机械火花、静电等。为提升防爆工业车辆在复杂工况下运行的安全性,本文从我国防爆工业车辆发展现状出发,结合防爆工业车辆存在的潜在点燃源,对防爆工业车辆的防爆安全技术及检测要求提出思考。

食品微生物检测新技术研究与应用进展

食品微生物检测对食品安全管理非常重要,目前仍以传统检验技术为主,而新技术也不断迅猛发展并得到了广泛应用。本文综述了分子生物学检测技术、免疫检测技术、代谢检测技术、光谱质谱检测技术及其他仪器检测技术等食品微生物检验新技术的研究及应用状况,展望了食品微生物检验新技术未来的发展方向,为保障食品安全提供了理论基础。