Fiber Bragg grating (FBG) measuring bolts, as a useful tool to evaluate the behaviors of steel bolts in underground engineering, can be manufactured by gluing the FBG sensors inside the grooves, which are usually symmetrical cuts along the steel bolt rod. In this paper, a mine-used fiber Bragg grating anchor sensor technology is proposed. The Bragg grating chain is connected and embedded into the anchor rod, which solves the problems that the surface-mounted grating anchor rod cannot be reused and is easily affected by the environment, and has the. This paper proposes a new approach to detecting bolts' anchoring qualities based on the fiber Bragg grating sensing principle. The selection of the cut shape and the glue.
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This guide covers the four decisions that determine distribution system performance: layout type, pipe sizing, drainage, and the connection from the compressor room to the distribution header. Get it right and every station runs at full working pressure. Get it wrong and tools operate 5–15 PSI below where they should — not because the compressor. Inadequate or poorly designed compressed air distribution systems can lead to low productivity, poor air tool performance and perhaps more importantly, high energy bills. There are three demands which must be met to avoid inefficiency. In this article, we'll explain how to meet such factors for optimal performance. Compressed air is often referred to as being the fourth utility within industry, behind elect icity, water, and natural gas.
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