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Solid Mechanics Lab

Location:
St. Benilde Hall #115

Faculty Supervisor:
Dr. Paul Shiue


Lab Description:


This lab is mainly for the mechanical engineering students and packaging program. The strength of materials is crucial in the design of products in all fields of mechanical engineering. Students are familiarized with the use of all test equipment and the mechanics behind these machines and tests. Students in the packaging program utilize machines in this lab for impact, compression, drop, and vibration tests of packaging materials.


Equipment:


  • Shock Tester Machine

  • Drop Tester (small)

  • Drop Tester (large)

  • MTS-810 Universal Tensile Tester

  • Vibration Excitor (7500 Hz max)

  • Vibration Table

  • Load Frame (3000 lbs.)

  • Impact Tester

  • Compression Table with 5000-lb capacity

  • Optical Comparator

The Lansmont Shock Tester Model 65/81 is used to evaluate if a package and its contents are capable of withstanding shocks during the distribution process and to determine the shock fragility of a product. The system can handle large items up to 500 lb, with a footprint up to 25.6” x 32” and maximum acceleration of 600 g. A device at the steel base can generate both half sine and trapezoidal shock pulses. Also, the hydro-pneumatic brakes prevent secondary impacts as the shock table rebounds.

The Lansmont PDT-56ED Drop Tester features an electric hoist capable of dropping packages up to 175 lbs (79 kg) from a height of 11 to 72 inches. The machine utilizes a high-velocity pneumatic cylinder and unique brake system for accurate flat drop testing. The hand-held controller is microprocessor based, giving the user the ability to set drop heights, to move the hoist up and down, and to return to the set drop height.

The Lansmont’s Model 1000 Vibration Test System is a servo-hydraulic machine that performs random vibration, field-to-lab simulations, resonance search and dwell, sine sweep, and repetitive tests. With a capacity of 75 lbs, it consists of a 25.8” x 25.8” cast aluminum table and an actuator with 2.5” of piston stroke. The machine comes with a computer-based TouchTest control, data acquisition, and data analysis system.

The MTS 810 Universal Tester is a completely integrated solution for obtaining information about the mechanical properties of materials or components. With a load capacity of 22 kips and the FlexTest SE Plus controller, the system can be used to perform tests such as fatigue life studies; crack propagation and fracture mechanics studies; tensile, compression, and bending tests; and other specific procedures like asphalt, soil, and geomechanics tests. Using the pictured compression fixture, the machine can perform compression tests on small packages.

The Vibration Excitor with 7500 Hz maximum frequency is able to test the vibration of small objects up to 0.5 lbf. Vibration responses and mode shapes can be obtained.