Non-destructive testing (NDT) techniques for low carbon steel welded joints: A review and experimental study

Deepak, J.R.; Raja, V.K. Bupesh; Srikanth, D.; Surendran, H.; Nickolas, M.M.

doi:10.1016/j.matpr.2020.11.578

Cited by 45 publications

(21 citation statements)

References 11 publications

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“…In the second part of research, penetration tests were performed to observe the actual number of surface cracks and their length. The research was based on the following publications [ 34 , 35 ]. In the third part of the research, tests were carried out to assess the depth of surface cracks.…”

Section: Methodology Of Testing Surface Cracksmentioning

confidence: 99%

Modeling the Depth of Surface Cracks in Brake Disc

et al. 2021

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The article presents the state of knowledge and research in the field of surface cracks occurring in disc braking systems of rail and car vehicles. The craze formed during the operation of vehicles is particularly dangerous and leads to breaking the disc into several pieces. It may lead to a loss of braking force and damage to the entire disc brake caliper. The main aim of the research is to identify surface cracks in brake discs made of cast iron and use experimental methods to estimate their depth. Research were conducted on the disc braking system developed by the authors. In examining the location and depth of cracks, the penetration method, ultrasound, as well as a special probe were used. This device measures the crack depth based on the electrical resistance between two points on the surface of the metallic object. The tests showed that the first microcracks on the brake discs appeared after 309 braking tests on the test stand. In addition, it was observed that the surface cracks length of the disc increased linearly to depth until they reached about 11.5–12 mm with corresponded to crack lengths in the range of 65–70 mm. However, determination of the regression functions presented in the article allows to estimate the depth of surface cracks up to 70 mm long on cast iron brake discs by measuring their length.

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Section: Methodology Of Testing Surface Cracksmentioning

confidence: 99%

Modeling the Depth of Surface Cracks in Brake Disc

et al. 2021

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“…Several different techniques are being used in order to examine the structural integrity of the manufactured parts. Amosov et al [1] performed ultrasonic testing on riveted joints in aviation construction, Deepak et al [2] compared different non-destructive inspection techniques to assess the quality of welded joints and Jasi ūnien ė et al [3] performed ultrasonic testing on complex titanium and carbon fiber composite joints. It is proven that non-destructive testing can offer a reliable inspection method in order to investigate the structural integrity of materials and joints.…”

Section: Introductionmentioning

confidence: 99%

Spot Weld Inspections Using Active Thermography

et al. 2022

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Spot welds have a significant part in the creation of automotive vehicles. Since the integrity of, for example, a car, is dependent on the performance of multiple welds, it is important to ensure the quality of each spot weld. Several attempts have been made in order to determine the quality of spot welds, but most of them do not focus on the applicability in the manufacturing process. Spot weld inspections are often performed using back heating. However, during manufacturing, robotic inspections are desired, and since the bodywork of a car is a complex shape, the accessibility from the inside of the vehicle is minor. Therefore, inspections using front heating are more suitable. In this manuscript, multiple excitation methods are compared as well as different post-processing techniques. The used excitation techniques can be divided into light heating and inductive heating. Light heating is further divided in lock-in thermography and pulse thermography. The used post-processing techniques are principle component analysis and fast Fourier transform. Inductive heating turns out to be the most suitable measurement technique since it is fast and can be performed as front and back heating. Both investigated post-processing techniques deliver suitable information, such as relief images and information of the internal structure of the spot weld.

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“…Their popularity in the examination of historic structures derives from the fact that NDT methods detect defects and evaluate the conditions of the materials without a necessity to destroy the studied element [ 12 ]. Additionally, NDT can be carried out not only during the exploitation of the object, but also during the construction stages to inform about its compliance with assumed requirements and properties [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

The Use of NDT Diagnostic Methods and Calculations in Assessing the Masonry Tower Crowned with the Steel Dome

et al. 2022

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Non-destructive testing (NDT) methods are a diagnostic tool for evaluating the risk of failure or the need for repair and renovation. In analyzing constructions of high historical value, destructive diagnostic methods should be avoided. This study is a comprehensive NDT investigation of the masonry tower topped with a steel dome, a remnant of the overhead telecommunications network from the end of the 19th century. Visual inspection and research made it possible to assess the degree of damage to the structure. Stress–strain state analysis showed the sufficient load-bearing capacity of the steel dome. In addition, calculations have shown that the masonry tower is subjected to significant horizontal forces causing structure cracks.

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Non-destructive testing (NDT) techniques for low carbon steel welded joints: A review and experimental study

Cited by 45 publications

References 11 publications

Modeling the Depth of Surface Cracks in Brake Disc

Modeling the Depth of Surface Cracks in Brake Disc

Spot Weld Inspections Using Active Thermography

The Use of NDT Diagnostic Methods and Calculations in Assessing the Masonry Tower Crowned with the Steel Dome

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