Pre-Lab Presentation Experiment 3.pptx

Make an estimate approximation for the ultimate loads

This preview shows page 11 - 15 out of 19 pages.

Make an estimate approximation for the ultimate loads (lb) for the specimen being tested [2] ? = V/2*A = 15000/2*.442 = 16968 psi
Image of page 11

Subscribe to view the full document.

Apparatus 1. Testing Area 2. Tenius-Olsen middle bridge (AKA Head) 3. Raise/lower controls 4. Removable block 12 Figure 3: Tenius-Olsen 200-kip Universal Testing Machine.
Image of page 12
Apparatus (cont.) 1. Specimen 2. Bolts for loading specimen 3. 1st Shearing edge 4. 2nd shearing edge 13 Figure 4: Shearing tool loaded for double shearing 1 3 4 2 * Currently loaded for double shear. To load for single shear specimen should be shifted so that it is only supported by the 1st shearing edge *
Image of page 13

Subscribe to view the full document.

Procedure 1. Turn on the system 2. Press “home” key on the panel 3. Set the machine in manual mode, slow speed, hit stop, with the pump of 4. Turn pump on 5. Compression Test : place specimen at the center (slightly of-center) Shear Test: place specimen in shearing tool. The shearing tool is then placed in the machine 6. Open Navigator software, set “Current Setting” appropriately (“compression with position” or “double shear”). Under the graphing, go to ASCII, enter length and file name. Under machine control, make sure the speed is 0.1 in/min. Sample breaks whenever there is 15% drop in the load (this is a criterion to stop loading). 14
Image of page 14
Procedure (cont.) 8. Make sure the machine is still in stop mode, slow, and nobs are closed. Bring the head down about an inch gap from the top face of the specimen 15 9 . Switch from stop to load mode from the panel. Rotate the “load” nob until the gap between the specimen and the head is gone (there is about 100-lb. preload in the specimen) .
Image of page 15
You've reached the end of this preview.
  • Spring '11
  • Felszeghy
  • Shear Stress, Tensile strength, Shear strength, double shear, Naval Brass

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern