Orientation Effects of Stress Concentrators on the Material Deformation Behaviour during Tensile Testing of Thin AISI 316 Stainless Steel Strips
Journal Title: International Journal of Modern Engineering Research (IJMER) - Year 2014, Vol 4, Issue 10
Abstract
Present investigation pertains to carry out to experimental work to generate data in order to establish the mode of material deformation and fracture in AISI 316 stainless steel strips of 1.70mm thickness in the presence of elliptical notches at the center of the specimen whose major axis were designed to incline to the tensile axis at an angle of 0o, 45oand 90oand the same happens to be the axis of rolling. An elliptical hole of 8.00mm (major axis) with 5.0mm (minor axis) were machined in each specimen so as to correspond to the above angles of 0o45oand90oand one specimen without any elliptical hole as a notch for comparative analysis of the experimental data. These flat specimens with and without stress concentrators were tested under tension using Hounsfield Tcnsomctcr and the changes in notch geometry have been recorded at various loadings. Further, the visual appearance of the cracks initiation have been continuously observed and recorded. The effect of stress ratio factors and the strain ratio parameters on the mode of fracture on material deformation in and around the stress concentrator has been thoroughly analyzed and it has been established that the crack initiation began either at the inner tips of the minor or the major axis of the elliptical stress concentrator, but, always perpendicular to the direction of loading irrespective of the rolling direction and the orientations of the stress concentrators. However, the changes in the rotation of the major and the minor axis of the elliptical stress concentrators were found to alter, and, this alteration in fact assisted in estimating the strains along the major as well as the minor axis of the stress concentrators. Relation between a plastic strain ratio with respect to the ratio between the major and the minor strains was observed to be of extremely complex nature. The overall observation in the present investigation has indicated that thin strips or sheet specimens containing a single or multiple or a combined type of stress concentrators will create a keen interest in the research approach of the investigators and make them aware of the seriousness of the presence of the stress concentrators and caution them to incorporate any possible design notifications in order to avoid any catastrophic failure (s).
Authors and Affiliations
A. Jahubar Ali , S. K. Pandey , K. S. Pandey
Keywords
Related Articles
- EP ID EP100052
- DOI -
- Views 90
- Downloads 0
A Neighbor Coverage-Based Probabilistic Rebroadcast for Reducing Routing Overhead In Mobile Ad Hoc Networks
Mobile ad hoc networks consist of a collection of mobile nodes without having a fixed infrastructure. Due to the infrastructure less network, there exist frequent link breakages which lead to frequent path failures and r...
AMicrostrip Patch Antenna with Aperture Coupler Technique At 5.8 GHz & 2 GHz
Abstract: This paper presents the basic design of a microstrip patch antenna with aperture coupling. This design is simulated using CST Microwave Studio 2009 software based on given operating frequency. The gain...
Architectural Strategies in Cold Regions to Create Sustainability in Residential Spaces
Disregarding the excessive consumption of energy to provide comfort in the residential units, especially in cold and mountainous regions, is one of the problems of residential complexes in Iran. Although a lot of r...
Evaluating phase level for critical success factors of BPM-system implementation: a case study in a Saudi government organization
Nowadays, many organizations rely on a business process management system (BPMS) since it provides a systematic approach to aligning organization’s processes with the customers’ needs. There has been much research...
Sustainability Index Measurement of Energy Efficient Skyscrapers: Present Indian Perspective
Abstract: During last century development of skyscraper have been rapidly increasing worldwide. The present fifth generation skyscrapers are influenced by the energy conservation and sustainable strategies. This p...