Modeling and characterizing impact damage in carbon fiber composites by thermal/infrared non-destructive testing

2014 ◽  
Vol 61 ◽  
pp. 1-10 ◽  
Author(s):  
Vladimir P. Vavilov
Keyword(s):  
Carbon Fiber ◽  
Impact Damage ◽  
Thermal Infrared ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Non Destructive

Low-Velocity Impact Characteristics of Carbon Fiber Composites Lattice Core Sandwich Structures

2009 ◽  
Vol 79-82 ◽  
pp. 127-130 ◽  
Author(s):  
Shi Xun Wang ◽  
Lin Zhi Wu ◽  
Li Ma
Keyword(s):  
Carbon Fiber ◽  
Sandwich Structures ◽  
Impact Damage ◽  
Composite Plates ◽  
Fiber Composites ◽  
Low Velocity Impact ◽  
Carbon Fiber Composites ◽  
Low Velocity ◽  
Velocity Impact ◽  
Numerical Predictions

Since composite sandwich structures are susceptible to low-velocity impact damage, a thorough characterization of the loading and damage process during impact is important. In the present paper, the low-velocity impact response of carbon fiber composites lattice structures are investigated by experimental and numerical methods. Impact tests on composite plates are performed using an instrumented drop-weight machine (Instron 9250HV) and a new damage mode is observed. A three-dimensional finite element model is built by ABAQUS/Explicit and user subroutine (VUMAT) to predict the peak loading and simulate the complicated damage problem. It can be found that numerical predictions coincide well with experimental results.

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 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 Detection of Impact Damage in Carbon Fiber Composites Using an Electromagnetic Sensor

2017 ◽  
Vol 29 (3) ◽  
pp. 123-142 ◽  
Author(s):  
Zhen Li ◽  
Arthur D. Haigh ◽  
Mohamed Nasr Saleh ◽  
Edward D. McCarthy ◽  
Constantinos Soutis ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Impact Damage ◽  
Fiber Composites ◽  
Carbon Fiber Composites ◽  
Electromagnetic Sensor

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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