A Comparison of Composite Specimens Damage area Measurements Performed using Pulsed Thermography and Ultrasonic NDT Methods

Q4 Engineering

Fatigue of Aircraft Structures Pub Date : 2019-12-01 DOI:10.2478/fas-2019-0007

Rafał Luziński, Jarosław Ziemkiewicz, P. Synaszko, A. Żyluk, K. Dragan

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引用次数: 1

Abstract

Abstract Carbon fiber reinforced plastics (CFRPs) are widely used in aerospace structures due to their high stiffness, strength and good fatigue properties. They are however vulnerable to loads perpendicular to their plane and, while impacted, can suffer significant internal damage decreasing their overall strength. Detecting and sizing such damage is an important task of the non-destructive inspection (NDI) methods. This study was conducted to detect and quantify damage in a set of six impacted even rectangular CFRP specimens designed from a MiG-29 vertical stabilizer’s skin. The inspection was done using the ultrasonic (UT) method (based on mobile scanner – MAUS V) and the pulsed infrared thermographic (IRT) method. Each specimen’s inside and outside (impacted) surface was inspected separately with IRT, while the outside surface was then inspected with UT. UT provided the most precise measurements of the damage area, while the IRT inspection of the outside surface (which would be accessible on a real aircraft structure) provided underestimated values due to the damage’s depth and geometry.

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用脉冲热成像和超声波无损检测方法测量复合材料试样损伤面积的比较

摘要碳纤维增强塑料具有较高的刚度、强度和良好的疲劳性能，在航空航天结构中得到了广泛的应用。然而，它们很容易受到垂直于其平面的载荷的影响，并且在受到冲击时，可能会遭受严重的内部损伤，从而降低其整体强度。检测和确定此类损伤的大小是无损检测（NDI）方法的一项重要任务。这项研究是为了检测和量化一组六个受冲击的矩形CFRP试样的损伤，这些试样是由米格-29垂直稳定器的蒙皮设计的。使用超声波（UT）方法（基于移动扫描仪MAUS V）和脉冲红外热像仪（IRT）方法进行检查。每个试样的内侧和外侧（受冲击）表面分别用IRT进行检查，而外侧表面则用UT进行检查。UT提供了损伤面积的最精确测量，而外侧（在真实的飞机结构上可以访问）的IRT检查由于损伤的深度和几何形状而提供了低估的值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fatigue of Aircraft Structures Engineering-Safety, Risk, Reliability and Quality

CiteScore

0.40

自引率

0.00%

发文量

期刊介绍： The publication focuses on problems of aeronautical fatigue and structural integrity. The preferred topics include: full-scale fatigue testing of aircraft and aircraft structural components, fatigue of materials and structures, advanced materials and innovative structural concepts, damage tolerant design of aircraft structure, life extension and management of ageing fleets, structural health monitoring and loads, fatigue crack growth and life prediction methods, NDT inspections, airworthiness considerations.