Strain Gages Applied to Aluminum Tube For University Experiments in Mechanical Engineering Labs
A laboratory apparatus for an engineering mechanics experiment used by students at a major university. The apparatus allowed the students to measure the state of stress at certain locations on the tube with combined force and moment applied loads. The students then compared the results with those predicted from computer analysis models.
A thin-walled aluminum tube had two sets of strain gages applied in two locations. A set of three linear pattern strain gages were applied oriented along the part axis and at 45° angles to study the principle stresses generated when bending and torsional loads were applied. A second set of four linear pattern strain gages were applied along the sidewall of a transverse ¼"drilled hole. These strain gages were used to study the circumferential stress concentration in the hole under under combined bending and torsional loading.
A thin-walled aluminum tube had two sets of strain gages applied in two locations. A set of three linear pattern strain gages were applied oriented along the part axis and at 45° angles to study the principle stresses generated when bending and torsional loads were applied. A second set of four linear pattern strain gages were applied along the sidewall of a transverse ¼"drilled hole. These strain gages were used to study the circumferential stress concentration in the hole under under combined bending and torsional loading.