Project Title

ADJUSTABLE COMPLIANT MECHANISM LOAD DEFLECTION TEST BENCH DESIGN

Presenters

Academic department under which the project should be listed

SPCEET - Mechanical Engineering

Faculty Sponsor Name

Ayse Tekes

Additional Faculty

Kevin McFall, Associate Professor, Mechatronics Department, kmcfall@kennesaw.edu

N/A

Abstract (300 words maximum)

Two adjustable compliant mechanism load deflection test benches are presented in this study. Both test bench mechanisms enable testing the deflection of flexible links. The modularity of the designs provides to test various link forms such as fixed-fixed and pinned-pinned joints. The load deflection test benches consist of a linear actuator, an amplifier rod, a linear rail, and a sliding car. The measurement setup is equipped with force and displacement sensors for the linear actuator, various clamps to attach the compliant member, and image processing software to measure member deflection. A displacement controlled loading using a linear actuator and step loading with a pulley can be applied as an input to the system.

There are several limitations placed on the design. The length of the test object should be between 5 cm to 30 cm, and low cost linear actuator with a low extension velocity to obtain quasi static deflection curves of the compliant members is required. The design should also have the capability of providing various types of boundary conditions with interchangeable attachments. The applied load can be applied either parallel or perpendicular to the test object. Input load deflection is measured with the displacement sensor, and the resulting member displacement measured visually using image processing software. This software synchronizes data from the displacement sensor and a calibrated camera image to automatically detect deflection using a perspective transform model and known dimensions of the test apparatus.

Project Type

Oral Presentation (15-min time slots)

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ADJUSTABLE COMPLIANT MECHANISM LOAD DEFLECTION TEST BENCH DESIGN

Two adjustable compliant mechanism load deflection test benches are presented in this study. Both test bench mechanisms enable testing the deflection of flexible links. The modularity of the designs provides to test various link forms such as fixed-fixed and pinned-pinned joints. The load deflection test benches consist of a linear actuator, an amplifier rod, a linear rail, and a sliding car. The measurement setup is equipped with force and displacement sensors for the linear actuator, various clamps to attach the compliant member, and image processing software to measure member deflection. A displacement controlled loading using a linear actuator and step loading with a pulley can be applied as an input to the system.

There are several limitations placed on the design. The length of the test object should be between 5 cm to 30 cm, and low cost linear actuator with a low extension velocity to obtain quasi static deflection curves of the compliant members is required. The design should also have the capability of providing various types of boundary conditions with interchangeable attachments. The applied load can be applied either parallel or perpendicular to the test object. Input load deflection is measured with the displacement sensor, and the resulting member displacement measured visually using image processing software. This software synchronizes data from the displacement sensor and a calibrated camera image to automatically detect deflection using a perspective transform model and known dimensions of the test apparatus.