Improved human-computer interaction for mechanical systems design through augmented strain/stress visualisation. (2017)

• Record Type: Journal Article
• Authors: Naets, Frank; Cosco, Francesco; Desmet, Wim
• Is Part Of: International journal of intelligent engineering informatics. Volume 5:Number 1(2017)
• Page Start: 50
• Page End: 66
• Publication Date: 2017
• Subjects: augmented reality -- mechanical systems design -- strain estimation -- stress estimation -- Kalman filter -- human-computer interaction -- HCI -- mechanical design -- visualisation -- prototype evaluation -- finite element method -- FEM -- modelling -- flexible beams; Artificial intelligence -- Engineering applications -- Periodicals; Engineering -- Computer programs -- Periodicals; Knowledge management -- Periodicals; 620.0028563
• Languages: English
• ISSNs: 1758-8715

Abstract

It is difficult to obtain realistic stress and strain estimates for mechanical designs due to unknown operational conditions, input forces and/or parameters. This limits a designer in evaluating whether a certain product meets all design specifications. This work presents an extended Kalman filter to obtain accurate strain and stress estimates of a structure under operational loading. An augmented reality application allows visualisation of these strains and stresses on a real component. This leads to an effective human-computer interface to evaluate a physical prototype. The developed approach exploits parametric reduced order models based on high fidelity finite-element design models to obtain an efficient formulation. This paradigm is validated on a flexible beam with unknown input forces and length. The proposed approach permits a more natural visualisation and interpretation of operational conditions. Our results encourage the adoption of this approach in applications ranging from design validation to online monitoring of structural components.