Whereas weight refers to the force exerted on an object by gravity.
Gravity test plastic sheet.
From falling apples to rising tides everything is affected by gravity.
1 2 two test methods are described.
This test is often seen with the designation astm d792.
Astm d792 98 describes the determination of the specific gravity relative density and density of solid plastics in forms such as sheets rods tubes or molded items.
This means no numbers or data just simple observation or eyeballing of the test location and testing materials for signs of excessive moisture.
Specific gravity and density are especially relevant because plastic is sold on a cost per pound basis and a lower density or specific gravity means more material per pound or varied part weight.
In the other words an object with a mass of 1 0 kilogram with weigh approximately 9 81 newtons on the surface of the earth.
0 2 astm d792.
There are chiefly two test methods are involved.
About this quiz worksheet.
There are two basic test procedures method a and method b.
The astm test method describes the determination of specific gravity and density of solid plastics of different forms such as sheets rods tubes or other molded items.
Standard specification for nonrigid vinyl chloride plastic film and sheeting.
Tensile strength ultimate 125 tensile modulus 125 flexural strength 125 flexural modulus 125 izod impact notched 125 at 73 izod impact notched 125 at 32 drop dart impact 250 at.
Test method a for testing solid plastics in water and.
Some methods of concrete moisture testing use a simple qualitative approach.
1 1 these test methods describe the determination of the specific gravity relative density and density of solid plastics in forms such as sheets rods tubes or molded items.
One of the astm test methods for plastic commonly seen on data sheets is the test for density and specific gravity sg.
1 2 1 test method a for testing solid plastics in water and.
Water absorption after 24 hr.
Complete this quiz worksheet to discover how much you know about this powerful force of nature.
Standard test method for resistance of plastic films to extraction by chemicals.
Standard test methods for impact resistance of plastic film by the free falling dart method.
One such test is the plastic sheet test astm d4263.
It is then immersed in a liquid and its apparent mass upon immersion is measured.
