نوع مقاله : مقاله پژوهشی
نویسندگان
آزمایشگاه تحقیقاتی کامپوزیت و نانوکامپوزیت، دانشکده مهندسی مکانیک، دانشگاه کاشان، کاشان، ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The de-bonding of core and face is one of the most important defects created in sandwich composite materials during their manufacture and operation. In this study, the pulsed step heating thermography method was used to identify and evaluate core and face de-bonding in carbon fiber reinforced sandwich composites with foam core. For this purpose, the de-bonding defects between the core and the face implemented in the samples during the manufacturing process. Then, using the pulsed step heating infrared thermography method, the location and number of these defects in the samples were identified. The desired parameters of this method, such as time step and heating rate, were obtained from the finite element modeling. By comparing numerical and experimental thermographic imaging results, the best time to record infrared images is predicted to be one second after the end of heating. Numerical results showed that with increasing thermal power and heating time, the temperature difference between the damaged area and its surroundings increased. Also, the numerical results were in good agreement with the experimental results, which can demonstrate the ability to detect the core and the face de-bonding defect in sandwich composite materials reinforced with carbon fibers and foam core using the pulsed heating thermography method.
کلیدواژهها [English]
)