A multilevel Bayesian method for ultrasound-based damage identification in composite laminates
نویسندگان
چکیده
منابع مشابه
Damage Assessment of Drilled Hybrid Composite Laminates
Hole drilling operations are common in fibre reinforced plastics FRP’s to facilitate fastener assembly to other parts in more complex structures. As these materials are non-homogeneous, drilling causes some damages, like delamination, for example. Delamination can be reduced by a careful selection of drilling parameters, drill material and drill bit geometry. In this work two types of laminates...
متن کاملDamage Strength Optimization of Laminates by a Reliability-based Method
This paper presents damage strength optimization of laminates using a reliabilitybased method. Two complementary analyses are developed: The first is a mechanical analysis of damage behavior using a thermodynamics framework which determines the failure criterion; the second is a reliability method which takes not only randomness, but also subjective uncertainties into account for failure probab...
متن کاملMicrocracking in Composite Laminates: Simulation of Crack-Induced Ultrasound Attenuation
Microcracking in composite laminates is a known precursor to the growth of inter-ply delaminations and larger scale damage. Microcracking can lead to the attenuation of ultrasonic waves due to the crack-induced scattering. 3D elastodynamic finite integration technique (EFIT) has been implemented to explore the scattering of ultrasonic waves due to microcracks in anisotropic composite laminates....
متن کاملMicro-crack ultrasound scattering in anisotropic composite laminates
A computational model of ultrasound scattering by micro-cracks in fiber reinforced polymer laminates is presented, foundational to study of micro-crack induced ultrasound attenuation. A model for transmission scattering response is developed using a boundary integral formulation, and associated approximate scattering theories are discussed. Numerical results are presented demonstrating applicat...
متن کاملModelling low velocity impact induced damage in composite laminates
The paper presents recent progress on modelling low velocity impact induced damage in fibre reinforced composite laminates. It is important to understand the mechanisms of barely visible impact damage (BVID) and how it affects structural performance. To reduce labour intensive testing, the development of finite element (FE) techniques for simulating impact damage becomes essential and recent ef...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Mechanical Systems and Signal Processing
سال: 2017
ISSN: 0888-3270
DOI: 10.1016/j.ymssp.2016.09.035