Charpy testing is a method for determining the relative impact strength of metals. It is also known as the Charpy V notch test. This testing method was developed in the 1940s by S.B. Russell and G.
Hollow Glass Microspheres are inorganic, nonmetallic spherical materials created by specific processes, commonly with diameters in the range of 10 to 250 μm and wall thicknesses of 1 to 2 μm (Figure 1 ...