APPLYING PHOTOELASTICITY WITH OPTICAL MAGNIFICATION METHOD TO INCREASE PRECISION OF DETERMINING FRINGE ORDER UNDER MONOCHROMATIC LIGHT
Journal Title: Journal of Mechanical Engineering Research & Developments (JMERD) - Year 2019, Vol 42, Issue 3
Abstract
Photoelasticity method was used to measure strain and stress fields to address the precision problem of determining fringe order of loading and cracking and notch areas. In this study, microscope was used as an additional tool in a photoelastic device for magnification of isochromatic fringe size. An experimental method was used by utilizing optical system and reflective polariscope. A simple compression tool was designed to provide a compression load on the solid disk-shaped specimens. Isochromatic fringe field was observed in the loading zone for different loading and captured image based on the following conditions: 9x, 15x and 20x without magnification and with magnification using SLR type Nikon camera Serie D3000. The image was processed using OpenCV software while C + + was used to produce clearer isochromatic fringe pattern formed on the surface of the specimen in the determination of the maximum fringe order observed. The average of additional fringe could be obtained as the optical magnification result. Data was analyzed using Finite Element Analysis Software. The result showed an increasing trend in fringe order with increasing levels of optical magnification. Its maximum value was obtained on20x optical zoom, which was 2-order fringe.
Authors and Affiliations
M. B. H Sitorus, Melvin Emil Simanjuntak, Agus Sigit Pramono, Henry Lumbantoruan, Udur January Hutabarat, B. Ginting, Piktor Tarigan, Teng Sutrisno
Keywords
Related Articles
- EP ID EP572189
- DOI 10.26480/jmerd.03.2019.55.61
- Views 93
- Downloads 0
MECHANICAL CHARACTERIZATION AND COMPARATIVE STUDY ON POLYESTER COMPOSITE LAMINATES REINFORCED WITH DIFFERENT BIO WASTE MATERIALS
The composites are the promising materials of this century, amongst that different types of polymeric matrix reinforced with different materials found application in many of the service industries. In most of the cases t...
ENVIRONMENT-FRIENDLY LOGGING IN THE CONTEXT OF WATER LOGGED SOIL AND KNOB- AND-RIDGE TERRAIN
Wood is an important building material. However, its major reserves are in hard-to-reach are-as, such as water-logged soils, mountain and knob-and-ridge terrains. This situation leads to large wood extraction costs, beca...
PERCEPTION TOWARDS INDUSTRY BASED CAPACITY BUILDING IN INSTRUCTORS TO ENHANCE QUALITY APPROACH IN ENGINEERING
Modern Training and learning assume a vital job for making a designing understudy just as an instructor work prepared and refreshed. The present building training requests inside and out hypothetical learning just as act...
MICROSTRUCTURE CHANGE FOR MULTI-PASS WELDING BETWEEN AUSTENITIC STAINLESS STEEL AND CARBON STEEL
The purpose of this study was to discuss the change in microstructures and hardness values in fusion zone (FZ) and heat-affected zone (HAZ) of austenitic stainless steel and carbon steel welds. By comparison, the morphol...
LEARNING OUTCOMES FOR TRAINING PROGRAM BY CDIO APPROACH APPLIED TO MECHANICAL INDUSTRY 4.0
The CDIO approach (Conceive-Design-Implement-Operate) is a model of educational reforms in technical universities towards meeting the needs of careers in the corporate and social context. The paper presents the need to b...