Fracture Parameter Evaluation Using Digital Image Correlation Technique
ثبت نشده
چکیده
Fracture and failure characterization of materials have been a crucial issue regarding reliable structural design. Stress Intensity Factor (SIF) is one of the most commonly used material parameters for more purpose. This study utilized Compact Tension (CT) Specimen test to determine mode-I SIF of polycarbonate material. Force, displacement and images of the near crack tip region were simultaneously recorded during the tests. In addition, digital image correlation (DIC) technique was successfully employed to obtain full field measurement of displacements and strains in the vicinity of the crack tip. The mode-I stress intensity factor was then calculated from the crack surface displacements obtained experimentally from DIC measurements and the results were verified by empirical formulae. These results are validated with theoretical and numerical values.
منابع مشابه
Stress Field Analysis of V-Notches with Tip Cracks in a Polymer Material Using Digital Image Correlation
In this study, displacement field around v-notches of a poly methyl metha crylate (PMMA) specimen with tip cracks will be analyzed using digital image correlation technique. First intensity factor in combination with in-plane rigid body translations and rotation components will be determined by linear least squares fitting of the displacement field data to the corresponding relations among stre...
متن کاملDisplacement monitoring of a Long-Span Arch Railway Bridge using Digital Image Correlation (DIC)
There is an escalating demand for condition monitoring enhancement of transport infrastructures worldwide. Bridges are of vital importance in transportation infrastructure and need such monitoring. In this research, a non-contact vision-based technique called Digital Image Correlation (DIC) was used to calculate the bridge displacements. A high frame rate camera with 4K capability was used for ...
متن کاملMeasurement of transient deformations using digital image correlation method and high-speed photography: application to dynamic fracture.
The digital image correlation method is extended to the study of transient deformations such as the one associated with a rapid growth of cracks in materials. A newly introduced rotating mirror type, multichannel digital high-speed camera is used in the investigation. Details of calibrating the imaging system are first described, and the methodology to estimate and correct inherent misalignment...
متن کاملThe Quantitative Bone Microarchitectural Based Computer Aided Analysis for Osteoporosis Detection Using Digital Hip Radiograph
The quality of life can be improved and risk of fractures would be effectively reduced, by the proper initial diagnosis of the osteoporotic abnormality. The identification of low bone mineral density (BMD) or the onset of osteoporosis can be performed by means of detecting the extracted trabecular features from digital hip radiographs. The objective of our study was to apply a gradient based im...
متن کاملMeasurement of Morphological Characteristics of Raw Cane Sugar Crystals Using Digital Image Analysis
Raw cane sugar is one of the most important product in the sugar industry and is the main raw material for the white sugar production. Morphological and physical properties of this product might influence the final white sugar. For instance, the behavior during centrifugation, transport and storage is related to the characteristics of these crystals. The object of this study was to determine th...
متن کامل