Abstract: In one aspect, a method for conducting a drop test of an article with one or more target parameters can include dropping the article and a drop carriage of a drop tower from an initial height with respect to a base of the drop tower for an initial drop test. The article can be coupled to the drop carriage. The method can include detecting accelerometer data with respect to the article for an initial impact between the drop carriage and the base of the drop tower; determining a constant energy balance curve; determining, based on the constant energy balance curve and a target pulse duration, a target complex stiffness and/or a target total weight; adjusting, based on the target complex stiffness or the target total weight, the complex stiffness and/or the total weight for a subsequent drop test; and conducting the subsequent drop test.

Abstract: In one aspect, a method for conducting a drop test of an article with one or more target parameters can include dropping the article and a drop carriage of a drop tower from an initial height with respect to a base of the drop tower for an initial drop test. The article can be coupled to the drop carriage. The method can include detecting accelerometer data with respect to the article for an initial impact between the drop carriage and the base of the drop tower; determining a constant energy balance curve; determining, based on the constant energy balance curve and a target pulse duration, a target complex stiffness and/or a target total weight; adjusting, based on the target complex stiffness or the target total weight, the complex stiffness and/or the total weight for a subsequent drop test; and conducting the subsequent drop test.

Abstract: This invention is intended to provide a means to reduce the radiation emitted by Mobile Devices when used by people to make calls or left on when carried by people close their bodies. This is because the mobile device radiation has been shown to cause some cellular changes that are believed to cause cancer in the long run. The purpose of inventing this shield is to provide some limited level of reduction of this radiation for constant users of mobile devices in the hopes of reducing serious cellular damage in the short term from using these devices. While there is a way to completely block all radio/microwave radiation emitted by mobile devices, that complete block would also render the mobile device unable to make calls or connect to services, so the intent of this shield is to reduce exposure while still allowing people to make or receive necessary calls.