Non-destructive Methods for Damage Assessment of Composite Sandwich Structures

Modal-Based Non-Destructive Damage Assessment in Composite Structures Using Wavelet Analysis: A Review

The paper presents an overview and a history of development of non-destructive modal-based methods together with advanced signal processing techniques based on wavelet transform applied to the composite fiber-reinforced materials. The wavelet analysis applied for the structural damage assessment gains the popularity due to the high sensitivity to any non-continuities and singularit ies in the m...

assessment of the park- ang damage index for performance levels of rc moment resisting frames

چکیده هدف اصلی از طراحی لرزه ای تامین ایمنی جانی در هنگام وقوع زلزله و تعمیر پذیر بودن سازه خسارت دیده، پس از وقوع زلزله است. تجربه زلزله های اخیر نشان داده است که ساختمان های طراحی شده با آیین نامه های مبتنی بر نیرو از نظر محدود نمودن خسارت وارده بر سازه دقت لازم را ندارند. این امر سبب پیدایش نسل جدید آیین نامه های مبتنی بر عملکرد شده است. در این آیین نامه ها بر اساس تغییرشکل های غیرارتجاعی ...

Damage tolerance and residual strength of composite sandwich structures

Non-destructive damage evaluation of composite structures by optoelectronic holography methodologies

Demands for increased performance and efficiency of mechanical and electromechanical components impose challenges on their engineering design and optimization, as well as on the types of materials utilized in their construction. Demands on materials imposed by new and rigorous applications have become so diverse and severe that single-component materials used alone cannot meet them. It is frequ...

NON-DESTRUCTIVE THERMAL DAMAGE CHARACTERIZATION OF CORDIERITE-MULLITE REFRACTORIES

Abstract: Refractory materials containing cordierite (2MgO.2Al2O3.5SiO2) and mullite (3Al2O3.2SiO2) are used as support in furnaces, because of their low thermal expansion properties which confer them a very good ability to thermal shock resistance. Composed of two phases presenting very different CTE (1.5–3×10-6 for cordierite and 4–6×10-6 K-1 for mullite), these materials can develop damag...