NDT Analysis of Metal Materials with Internal Defects Using Active Infrared Thermography Method

2006 ◽  
Vol 321-323 ◽  
pp. 835-840 ◽  
Author(s):  
Won Tae Kim ◽  
Man Yong Choi ◽  
Jung Hak Park
Keyword(s):  
Infrared Thermography ◽  
Thermal Imaging ◽  
Non Destructive Testing ◽  
Ir Thermography ◽  
Internal Defects ◽  
Destructive Testing ◽  
Active Infrared Thermography ◽  
Thermal Patterns ◽  
Metal Materials ◽  
Non Destructive

This study is aimed to analyze the thermal imaging patterns presented by infrared(IR) thermography at which the metal with internal defects are thermally heated. Through the knowledge of non-destructive testing which infrared thermography can be applied to detect the defects inside the materials, there are two materials experimented; one is stainless steel and the other is cast-iron. Thermally, each material of specimens is heated at the base of the material and kept with constant temperature, The artificial defects in the specimen are formulated. Under the shape and location of the defects, temperature profiles are also measured and validated using the computer simulation. It is concluded that the characteristics of thermal patterns obtained from IR thermography are consistent with those of measurement and computations.

scholarly journals CFRP Non-Destructive Testing Using IR Thermography Methods

Proceedings ◽  
2019 ◽  
Vol 27 (1) ◽  
pp. 30
Author(s):  
Swiderski
Keyword(s):  
Construction Materials ◽  
Non Destructive Testing ◽  
Ir Thermography ◽  
Destructive Testing ◽  
Active Infrared Thermography ◽  
Multilayer Composites ◽  
Military Applications ◽  
Different Types ◽  
The Many ◽  
Non Destructive

Multilayer composites reinforced fibres are often used in military applications as construction materials for lightweight ballistic covers that protect against fragments and projectiles. The basic fibre used in these applications is aramid fibre, but research is also conducted using carbon fibres. One of the many methods used in non-destructive testing of composites is active infrared thermography, in which different types of sources can be used to thermally stimulate the material being tested. This paper compares the results obtained with various methods of thermal stimulation in the study of samples made with CFRP with deliberately introduced defects and destructive tests.

Infrared Thermography Non-Destructive Testing of Composite Materials

2011 ◽  
Vol 291-294 ◽  
pp. 1307-1310 ◽  
Author(s):  
Cui Qin Wu ◽  
Wei Ping Wang ◽  
Qi Gang Yuan ◽  
Yan Jun Li ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Infrared Thermography ◽  
Fiber Composite ◽  
High Energy ◽  
Non Destructive Testing ◽  
Solid Rocket Motor ◽  
Destructive Testing ◽  
Inspection Method ◽  
Active Infrared Thermography ◽  
Non Destructive

To detect the delamination, disbond，inclusion defects of the glass fiber composite materials applied in the solid rocket motor, active infrared thermographic non-destructive testing(NDT) is researched. The samples including known defects are heated by pulsed high energy flash lamp. The surface temperature of the samples is monitored by infrared thermography camera. The results of the experiments show that the active infrared thermography technique is a fast and effective inspection method for detecting the defects of delamination, disbond，inclusion of the composites. The samples are also detected by underwater ultrasonic c-scans. The paper concludes that the active infrared thermography NDT is more suitable to rapidly detect the defect in large-area and the underwater ultrasonic c-scans is more suitable to quantitatively identify the defect in local-area.

scholarly journals Non-Destructive Evaluation of Composite Helmets Using IR Thermography and Ultrasonic Excitation

2021 ◽  
Vol 25 (4) ◽  
pp. 89-92
Author(s):  
Waldemar Świderski ◽  
Monika Pracht
Keyword(s):  
Infrared Thermography ◽  
Non Destructive Testing ◽  
Ir Thermography ◽  
Destructive Testing ◽  
Non Destructive Evaluation ◽  
Non Destructive ◽  
Pulsed Infrared Thermography

The paper presents selected results of non-destructive testing of composite helmets with deliberately introduced defects. Ultrasound pulsed infrared thermography was used for the tests. In order to determine the initial possibilities of this method, artificial defects made of Teflon featuring different area sizes and designed to simulate delamination were placed between layers of the aramid composite from which the helmet was made. The obtained results confirmed the effectiveness of the NDT method used in these tests.

scholarly journals Improved image processing of road pavement defect by infrared thermography

2018 ◽  
Vol 13 (s1) ◽  
pp. 61-72 ◽  
Author(s):  
Jun-Gi Sim
Keyword(s):  
Image Processing ◽  
Infrared Thermography ◽  
Processing Method ◽  
Natural Light ◽  
Non Destructive Testing ◽  
Internal Defects ◽  
Destructive Testing ◽  
Road Pavement ◽  
Clear Identification ◽  
Non Destructive

Abstract This paper intends to achieve improved image processing for the clear identification of defects in damaged road pavement structure using infrared thermography non-destructive testing (NDT). To that goal, 4 types of pavement specimen including internal defects were fabricated to exploit the results obtained by heating the specimens by natural light. The results showed that defects located down to a depth of 3 cm could be detected by infrared thermography NDT using the improved image processing method.

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