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Testing of ring-type guard design showed significant entrapment issues.
Design Research Engineering
Product evaluation is essential to assert the soundness and effectiveness of the design. Product evaluation is the process of assessing the intended product's functionality, usability, to identify and remove design or manufacturing defects.
There are different stages methods of evaluation. Depending upon the nature of the product at what stage evaluations are to be done will be decided. They may be a general evaluation at the design and manufacturing stages or a critical evaluation at the time of prototype testing. Questionnaires, creation of weightage points to evaluate different functional and operational parameters are used in the evaluation process. The questionnaires may seek feedback on aspects such as functionality, feasibility, user-friendliness, durability etc.,