مشخصات پژوهش

عنوان	Damage tolerance approach for analyzing a helicopter main rotor blade
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	Helicopter fatigue life Blade life estimation Damage tolerance Fracture mechanics Fatigue crack growth
چکیده	In this article, damage tolerance approach is used for life estimation of the main rotor blade of a helicopter under random loading. At first, fatigue crack growth properties and threshold stress intensity range of the spar is obtained based on ASTM E647 test method. Then, crack growth analysis is done using Zencrack software. In order to calculate the length of the smallest growing cracks and their fatigue crack growth life, no crack growth and slow crack growth approaches were used. A comprehensive investigation was carried out on the effect of initial crack length on growth or no growth of cracks.
پژوهشگران	سیروان محمدی (نفر دوم)، امیررضا شاهانی (نفر اول)