The Effect of Ambient Temperature on Human Strength
Journal Title: International Journal of Mechanical and Production Engineering Research and Development (IJMPERD ) - Year 2019, Vol 9, Issue 3
Abstract
Impact of environmental conditions like temperature is usually not considered in the measurement of work content analysis. However, to ensure healthy work conditions, it is imperative that studies on the effects of heat and cold stress on workers' capacity are carried out and existing guidelines on working capacity be suitably modified. In this study, the effect of heat stress on the physical strength of subjects measured in terms of average push/ pull/ pedal/ grip force applied over 30 seconds was recorded. In dry bulb temperature studies, it was found that subjects showed a maximum strength at 20oC or 25oC and a 30% and 35 % drop in strength was observed at 5oC and 40oC respectively. In case of wet bulb globe temperature (WBGT), the maximum strength was recorded between 13oC to 21oC and a 31% and 41% drop in strength was observed in the range 3oC to 5oC and 37oC to 39oC respectively. Statistical analysis of strength at ambient temperatures between 5oC to 40oC dry bulb values gave a second order "inverted-U" relationship between strength and temperature and, a second order "U-shaped" relationship between the drop in strength and temperature
Authors and Affiliations
Vinayak Marathe, Shriram Sane, Varsha Karandikar, Amol Mate
Keywords
Related Articles
- EP ID EP617039
- DOI 10.24247/ijmperdjun2019120
- Views 96
- Downloads 0
A Comparative Assessment of Tensile Strength and Corrosion Protection in Friction Stir Processed AA7075-T651 Matrix Composites using Fly Ashes Nanoparticles as Reinforcement Inhibitors in 3.5 % NaCl
This research presents the performance of eco-friendly waste materials, which are wood fly ash nanoparticle (WFA-NPs) and coal fly ash nanoparticles (CFA-NPs) as economical reinforcements corrosion inhibitors on friction...
A Small-Scale Fabrication Facility for Extraction of Alternative Diesel Fuel from Waste Plastic
Plastic waste is viewed as conceivably economy wellspring of chemicals and vitality. Because of the expanding level of private utilization of these plastic materials, colossal measures of squanders are released to the ea...
Design And Analysis of Connecting Rod Material Made By B4c Reinforced Al7075 Alloy Heat Treated Composites
Connecting rods are highly stressed members in engines; connecting rods are also called as CON rods are subjected to alternative tensile and compressive loads with inertia loads. Inertia plays a major role in high speed...
Heat and Mass Transfer Modelling in Lyophilization Process for an Apple Slices
The aim of this paper is to develop a mathematical model, which simulates the lyophilization process for an apple slices. In the lyophilization process, the moisture content in the slices is removed with the help of a fr...
Offsetting of Circular Cross Bore Effects on Elastic Pressurized Thick Cylinders
A research to determine an optimal location of a circular cross bore in thick walled high pressure vessels was conducted. Cylinders of thickness ratios of 3.0 down to 1.4 with circular cross bore at varying offset positi...