Failure Analysis of Comb for Sheep Hair Shearing Device
This paper emphasizes the failure analysis of comb of a sheep hair shearing device developed by IIT Delhi. This device is under development to provide a mechanized way to cut woollen fleece of the sheep to minimize the drudgery faced by shearers. After few trails of the device in the field, comb broke. Our purpose was to find the type and cause of the failure on the failed comb so that the quality of the product could be improved. To get the objective done, visual inspection and metallographic study were performed. For metallographic study, SEM (Scanning Electron Microscope) and EDS or EDX (Energy Dispersive Spectroscopy) were used. To avoid this failure, some corrections in the manufacturing process are suggested in this paper.
KeywordsComb Sheep hair shearing device Woollen fleece
The authors would like to thank Central Wool Development Board (CWDB), Jodhpur for their financial support under the project titled “Dissemination of Low cost Sheep Hair Shearing device developed by Indian Institute of Technology Delhi”. The help of Mr. Sanjeet, Ph.D. Scholar, is also acknowledged for performing the SEM and EDS experiments of the comb. Several vendors around New Delhi are also thanked for their generous help to make different components.
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