ISO 16940:2008描述了夹层玻璃试样的损耗系数和等效弯曲刚度模量的测量方法。目的是比较夹层的性能。这两个参数（以及其他参数，如玻璃组件的密度和厚度）可能与嵌装玻璃本身的声音传输损失（STL）有关。

ISO 16940:2008 describes a method for the measurement of the loss factor and the equivalent bending rigidity modulus of laminated glass test pieces. The aim is to compare the properties of interlayers. These two parameters (and others such as density and thicknesses of glass components) can be related to the sound transmission loss (STL) of the glazing itself.