MECHANICAL ENGINEERING LABORATORY 1
EXPERIMENT FOR COMPRESSION SPRING TESTING AND
SHEARING
NAME: KEN RUSS M. BALLESTEROS
YEAR AND SECTION: BSME IV-2
I. OBJECTIVE/S
1. To test the strength of compression spring and the force exerted as well as the
deformation which occur when subjected to load.
2. To determine the shearing and flexural stress of some material.
II. APPARATUS AND EQUIPMENT
Universal testing machine, helical spring, Vernier caliper, steel rule, specimen
III. PROCEDURE:
1 Place the compression spring in the U.T.M. and draw the set up. Apply load in the spring as
instructed by the professor
2. Tabulate the deformation of the spring and the gages reading for every 30 psi. Increase. Fill
up the table.
a. Area of ram (Am) – 120 mm
b. Mean of diameter (Dm) – 42 mm
c. Diameter of wire (d) – 7 mm
d. Spring Index (c) – D/d
- 42 mm / 7 mm
- 7 mm
e. Number of coil (n) – n (total): 19
- n (active): 17
TRIAL FORCE (F) DEFORMATION (Ss)
1. 30 psi
2. 60 psi
3. 90 psi
