What is internal vibration also known as?

Internal vibration, commonly referred to as stinger vibration, pertains to the process where a device is inserted into a mixture to enhance the compaction and stability of the materials. This technique is crucial in various construction and manufacturing settings, particularly when dealing with concrete or other composite materials.

The term "stinger" implies a tool that penetrates and vibrates internally to disperse air bubbles and eliminate voids, ensuring a denser and more uniformly mixed product. The effectiveness of internal vibration is vital for the quality of the final result, as it helps to achieve the desired strength and durability of the concrete or material being worked with.

In contrast, the other terms do not accurately describe this form of vibration. Hammer vibration typically suggests an impact-based method for compaction on the surface, surface vibration refers to techniques applied on the surface layer of materials, and gravity vibration implies a method reliant on gravitational forces rather than mechanical means. Thus, stinger vibration is the most appropriate term to identify internal vibration in this context.