Office of Technology Transfer – University of Michigan

3D SSPP Mobile Application

Technology #4991

Assessing the biomechanical stress imparted by any given task is fundamental to preventing workplace injuries. To improve ease of use and convenience, researchers at the University have adapted previously disclosed software (UM 0269) for static strength prediction to a mobile platform. Lifting-related work injuries cut across professional and demographic barriers, comprising approximately one quarter of all work-related injuries and costing over $50 billion annually. Unfortunately, common lifting aids, such as the back belt, have been found to be ineffective. Furthermore, governmental lift-evaluation rubrics are often ignored. This technology increases worker safety by providing reliable analysis of biomechanical stresses in a convenient, user-friendly package.

Mobile platform retains key functionality and increases ease-of-use With a simplified version of the 3D Static Strength Prediction Program developed at UM, this technology is capable of performing rapid ergonomic analysis on-site. Using the integrated camera of a smartphone or tablet, the user can input a picture which is then used as a template to set posture of the subject. Resulting stress values are calculated as parameters are adjusted, allowing the user to dynamically visualize how posture and technique affects the stress imparted on his/her body by a load. In addition to its applications in on-site evaluation of lift stress, these features make the mobile 3D SSPP app a powerful platform for biomechanics and ergonomics education.

Applications • Lift safety evaluation • Ergonomics analysis

Advantages • Quickly and simply evaluate worker stress • Mobile app package allows technology to be deployed on-site and on-demand • Illustrate basic biomechanics principles to novices