MODELING A THERMAL IMAGING PROCESS IN AN IMPACT DAMAGED COMPOSITE STRUCTURE

2005 ◽  
Vol 02 (01) ◽  
pp. 63-76
Author(s):  
M. Z. ISKANDARANI ◽  
N. F. SHILBAYEH
Keyword(s):  
Data Analysis ◽  
Composite Structure ◽  
Thermal Imaging ◽  
Electronic Circuit ◽  
Impact Damage ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Novel Approach ◽  
Wavelength Variation ◽  
Non Destructive

An innovative NDT (non-destructive testing) technique for interrogating materials for their defects has been developed successfully. The technique has a novel approach to data analysis by employing intensity, RGB signal re-mix and wavelength variation of a thermally generated IR-beam onto the specimen under test which can be sensed and displayed on a computer screen as an image. Specimen inspection and data analysis are carried out through pixel level re-ordering and shelving techniques within a transformed image file using a sequence grouping and regrouping software system, which is specifically developed for this work. The interaction between an impact damaged RIM composite structure and thermal energy is recorded, analyzed, and modeled using an equivalent Electronic circuit. Effect of impact damage on the integrity of the composite structure is also discussed.

scholarly journals Thermal Imaging as a Non Destructive Testing Implemented in Heritage Conservation

2012 ◽  
Vol 4 (4) ◽  
Author(s):  
Rodrigo Velázquez Castillo ◽  
Miguel A. Pérez-Lara ◽  
Eric Rivera-Muñoz ◽  
José L. Arjona ◽  
Mario E. Rodríguez-García ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Heritage Conservation ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

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.

Ultrasonic Transducer Employing a ZnO-film/Al-foil Composite Structure for Non-Destructive Testing

1990 ◽  
Vol 29 (S1) ◽  
pp. 53
Author(s):  
Mitsuru Yamamoto ◽  
Ken-ya Hashimoto ◽  
Velayutham Rajendran ◽  
Masatsune Yamaguchi
Keyword(s):  
Composite Structure ◽  
Ultrasonic Transducer ◽  
Non Destructive Testing ◽  
Zno Film ◽  
Destructive Testing ◽  
Non Destructive

scholarly journals Non-Destructive Testing of Composites by Ultrasound, Local Defect Resonance and Thermography

Proceedings ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 554 ◽  
Author(s):  
Mathias Kersemans ◽  
Erik Verboven ◽  
Joost Segers ◽  
Saeid Hedayatrasa ◽  
Wim Van Paepegem
Keyword(s):  
Impact Damage ◽  
A Priori ◽  
Back Surface ◽  
Local Defect ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Flat Bottom ◽  
Reinforced Plastics ◽  
Local Defect Resonance ◽  
Non Destructive

Different non-destructive testing techniques have been evaluated for detecting and assessing damage in carbon fiber reinforced plastics: (i) ultrasonic C-scan, (ii) local defect resonance of front/back surface and (iii) lock-in infrared thermography in reflection. Both artificial defects (flat bottom holes and inserts) and impact damage (barely visible impact damage) have been considered. The ultrasonic C-scans in reflection shows good performance in detecting the defects and in assessing actual defect parameters (e.g., size and depth), but it requires long scanning procedures and water coupling. The local defect resonance technique shows acceptable defect detectability, but has difficulty in extracting actual defect parameters without a priori knowledge. The thermographic inspection is by far the fastest technique, and shows good detectability of shallow defects (depth < 2 mm). Lateral sizing of shallow damage is also possible. The inspection of deeper defects (depth > 3–4 mm) in reflection is problematic and requires advanced post-processing approaches in order to improve the defect contrast to detectable limits.

scholarly journals Identification of structural defects in composite materials by the thermal imaging non-destructive testing method

2019 ◽  
Vol 298 ◽  
pp. 00119
Author(s):  
Andrey Kokurov ◽  
Igor Odintsev ◽  
Boris Chichigin ◽  
Dmitry Subbotin
Keyword(s):  
Composite Materials ◽  
Polymer Composites ◽  
Thermal Imaging ◽  
Structural Defects ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Testing Method ◽  
Non Destructive ◽  
Layered Polymer Composites

The article discusses the practical aspects of applying the thermal imaging non-destructive testing method of layered polymer composites. The specific purpose of the work is to demonstrate the possibilities of detecting in material and geometric identification of initial defects such as debonding.

Application of the Roof Leakage Infrared Detection Technology

2013 ◽  
Vol 401-403 ◽  
pp. 978-981
Author(s):  
Xiao Wen Zeng ◽  
Yong Mei Zhang
Keyword(s):  
Thermal Imaging ◽  
Experimental Studies ◽  
Test Method ◽  
Thermal Method ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Infrared Thermal Imaging ◽  
Scope Test ◽  
Detection Technology ◽  
Non Destructive

The infrared thermal imagery technology receives more and more attention in the civil engineering because of its unique advantages. But there is still room for more in-depth theoretical and experimental studies in the aspect of its applicable scope, test method, the result and the precision analysis and so on. Through the research of the infrared thermogram of water-containing and insulation-free roof specimen and glass fiber insulation roofing specimen, this paper mainly analyzes the factors which influence detection of the roof leakage by using infrared thermal method and gives some suggestion for the application of infrared thermal imaging in the roof leak detection. Thus it provides the theory basis and the technical reference for the actual infrared non-destructive testing.

ESPI non-destructive testing of GRP composite materials containing impact damage

1998 ◽  
Vol 29 (7) ◽  
pp. 721-729 ◽  
Author(s):  
Z.Y. Zhang ◽  
M.O.W. Richardson ◽  
M. Wisheart ◽  
J.R. Tyrer ◽  
J. Petzing
Keyword(s):  
Composite Materials ◽  
Impact Damage ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive
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