Purpose Various occupations in life require personnel to stand for a prolonged period of time. This causes excessive stress on the joints leading to musculoskeletal disorders. This paper aims to design an equipment ensure the personnel rests on whenever necessary. Design/methodology/approach The method followed in this paper is the adoption of Karl Ulrich’s product design methodology with suitable modifications as per requirement. Human anthropometric data from the Indian population has been considered during the design and modelled according to it using computer aided design and computer aided engineering tools. Findings The conceptual equipment – exoskeleton designed sustained loads of human beings and proved to be a safe design in terms of the strength of the material used in the design. Social implications This design can serve as equipment, which helps the personnel with long-standing work hours to relieve themselves without actually sitting. Originality/value The design has been carefully crafted based on the inputs from the anthropometric features of human beings, which is completely passive in nature i.e. no use of external power is required for this exoskeleton compared to the other available designs.
Purpose In certain industrial operations, workers are required to stand for a prolonged duration. This leads to muscular fatigue in the legs, posing a threat to the productivity and well-being of the workers. This paper aims to address this problem of women in the clothing industry with an exoskeleton designed for lower extremities and improve productivity. Design/methodology/approach Ulrich’s product design approach has been followed with suitable modifications. The methodology involves a study to justify the need for this product and terminating at the physical and virtual evaluations of the product. Required anthropometric parameters are considered along the design process. Findings The exoskeleton discussed in this paper is an innovative product made of Aluminium 6061 alloy. During the simulation phase of the product, total von-mises stresses to a part bearing 1 leg were 31.5 MPa, 94.7 MPa and 284 MPa for aluminium, SS308 and springs, respectively. These values are below the yield limit by a great margin. Based on a user survey of this product, 72% of the targeted customers were interested in buying. Also, comparing electromyography (EMG) mean value of the voltage between workers’ leg with and without exoskeleton revealed that there was an improvement in the voltage by 2.5% when exoskeleton was used. Originality/value This paper emphasizes, for the first time – the necessity of an exoskeleton indigenized for the Indian population and the process of realizing it by designing an exoskeleton.
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