Dynamic fracture of concrete – compact tension specimen
نویسندگان
چکیده
منابع مشابه
Finite Element Computational Approach of Fracture Toughness in Composite Compact - Tension Specimen
For composite structure, fracture toughness is a dominant parameter when using cohesive laws to predict the nominal strength. In the present study the compact tension test is performed on composites structures and is simulated using FEM. The process of fracture takes places in two sequential stages, crack initiation and crack propagation. The critical energy release rate is determined using the...
متن کاملA Study of Concrete Specimen Change Under Fracture
Volumetric images of small mortar cylinders under load are acquired by X-ray microtomography. The images are binarized at different threshold values, and the connected components are extracted at each threshold with a 3D spaceand time-efficient program. Statistics of volume and surface area of separated concrete segments and cracks are collected and analyzed. Under increasing load, the concrete...
متن کاملDesign and Analysis of a Compact Tension (ct) Specimen for Intralaminar Fracture Toughness Characterisation of Woven Composite Laminates
Final failure of laminated composite structures is preceded by different damage mechanisms involving fracture initiation and propagation. Fracture in a composite laminate can appear either between two plies or within a lamina. In the first case, interlaminar fracture or delamination, the crack causes separation of two adjacent plies and will mainly involve matrix failure or matrix-to-fibre debo...
متن کاملCalculation of the Electrical Resistance of a Compact Tension Specimen for Crack-Propagation Measurements
The electrical resistance of a notched compact specimen for determination of plane-strain fracture toughness was calculated using numerical methods coupled with the Schwarz-Christoffel transformation. Experimental measurement of this resistance is commonly used to obtain the crack length in notched specimens subjected to stress corrosion and hydrogen embrit t lement tests. The results presented...
متن کاملMeasurement of the residual stress tensor in a compact tension weld specimen
Neutron diffraction measurements have been performed to determine the full residual stress tensor along the expected crack path in an austenitic stainless steel (Esshete 1250) compact tension weld specimen. A destructive slitting method was then implemented on the same specimen to measure the stress intensity factor profile associated with the residual stress field as a function of crack length...
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: International Journal of Solids and Structures
سال: 2011
ISSN: 0020-7683
DOI: 10.1016/j.ijsolstr.2011.01.033