To be honest, I have yet to find a quality mass gainer on the market. The problem with most mass gainers is that they are loaded with cheap sugars as a carb source. Not only can this lead to greater fat gain, it can make drinking them several times a day unhealthy.
Mechanical stress: physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion.
Vibration measurement tools. Machine monitoring made simple. Abnormal vibrations are often the first indication of a potential machine failure. Conditions that can cause these vibrations include unbalance, misalignment, looseness of parts, deteriorating rolling element bearing and gear damage.