The Boeing Company

Liisa Charlie Hammer

Karen Chiyono Takatani

James D Cotton

Kevin F Malik

Richard Jay Gardner

Geoffrey Allen Butler

Robert Courdji

James Dean Cotton

A method for modeling soft tissue includes receiving one or more images showing an anatomical geometry of a first subject. The anatomical geometry includes a soft tissue. The method also includes measuring a plurality of parameters of the anatomical geometry of the first subject using one or more sensors attached to the first subject. The method also includes receiving a first set of material properties for the soft tissue of the first subject, a second subject, or both. The method also includes identifying a second set of material properties that characterizes the soft tissue while the first subject performs a task. The method also includes determining a strain on the soft tissue, a stress on the soft tissue, or both based at least partially upon the one or more images, the parameters, the first set of material properties, and the second set of material properties.

Combining multiple ergonomic risk factors in a single predictive finite element model

Techniques for obtaining materials science properties of soft tissue for use in a damage model for ameliorating injuries in an individual performing a process are presented. The techniques can include obtaining physical parameters characterizing the soft tissue of the individual under each of a plurality of loading conditions, fitting a soft tissue damage model based on the parameters, and ameliorating injury in performing the process by implementing guidelines based on the soft tissue damage model.

Characterizing soft tissue stress for ameliorating injury in performing a process

Disclosed techniques for performing a process can include performing, by a plurality of subjects, a first repetitive movement with a specified stress or strain per cycle; analyzing for soft tissue disorganization or partially torn soft tissue in each of the plurality of subjects; generating an association relating stress or strain to a number of cycles that cause a transition to subrupture damaged tissue or to incomplete tear damaged tissue; measuring a stress or strain per cycle for a second repetitive movement that makes up the process; determining a limit on a number of cycles of the second repetitive movement intended to avoid at least one of: a transition to subrupture damaged soft tissue or to incomplete tear damage tissue; and performing the second repetitive movement as part of the process while ensuring that no individual subject exceeds the limit on the number of cycles of the second repetitive movement.

Characterizing soft tissue subrupture damage and incomplete tear damage for performing a process

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Seattle, WA, United States of America

Liisa Charlie Hammer