Dual Pulley Optical Fiber Tensile Testing Apparatus
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Solution Overview
Problem
Existing tensile testing apparatus for optical fibers are complex and costly, and the process of re-threading untested fiber after a break is slow and cumbersome, hindering efficient testing and increasing costs.
Innovation Solution
A dual pulley system with differing circumferential surfaces and drive belt sections creates a speed difference to apply tension efficiently, allowing for simple and cost-effective testing, and enables easy handling of fiber breaks by keeping the new leading end trapped for quick reconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional tensile testing apparatus is used, then the optical fiber can be tested for strength, but the apparatus becomes complex and costly
Solution Approach 1:
The testing apparatus is divided into separate functional modules: a first drive unit that rotates a first pulley to pull the optical fiber, and a second drive unit that rotates a second pulley to apply resistance. This segmentation allows each component to perform its specific function independently, simplifying the overall design while maintaining testing capability.
Solution Approach 2:
The invention extracts the essential function of tensile testing by using only two pulleys and two drive units, removing unnecessary components from traditional complex apparatus. The core functionality of applying tension and measuring strength is achieved through this minimal configuration, reducing device complexity significantly.
2Reliability
If the optical fiber breaks during testing, then the testing can identify weak points, but the remaining untested fiber needs manual re-threading which is slow and cumbersome
Solution Approach 1:
The apparatus is designed with a continuous fiber path and automatic tension maintenance system. When a fiber break occurs, the system automatically maintains tension on the remaining fiber and the broken ends are positioned for quick reconnection. The guide structure pre-positions the fiber segments, eliminating the need for manual re-threading operations.
Solution Approach 2:
The system automatically handles the consequences of fiber breakage through its continuous operation capability. The drive units maintain tension automatically, and the guide structure keeps the fiber segments aligned and ready for immediate continuation of testing without requiring manual intervention to re-thread the fiber.
3Device complexity
If a simple testing apparatus is used, then costs are minimized, but the testing efficiency and speed may be reduced
Solution Approach 1:
The apparatus maintains continuous tension on the optical fiber throughout the testing process through the coordinated rotation of the two pulleys. The fiber moves continuously through the testing zone without interruption, and the system can immediately continue testing after a break without stopping or requiring manual re-threading, thereby maintaining high productivity despite the simple apparatus design.
Solution Approach 2:
The system uses dynamically controlled rotation of the pulleys to apply variable tension forces during testing. The drive units can adjust their rotation speeds and forces in real-time to optimize the tensile test conditions, maintaining high testing efficiency while keeping the mechanical structure simple.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution simplifies and accelerates the tensile testing process, minimizing costs and allowing for immediate continuation of testing after a break, as the apparatus requires only a single drive unit and does not need synchronized rotation speeds, ensuring efficient and rapid testing.
Implementation Method 1
a dual pulley (6) with a first circumferential surface (7) having a first diameter (D1) and a second circumferential surface (8) having a second diameter (D2), wherein the second diameter (D2) is larger than the first diameter (D1)
Implementation Method 2
A first drive belt section (2) aligned with the first circumferential surface (7) contacts the first circumferential surface (7), and a second drive belt section (3) aligned with the second circumferential surface (8) contacts the second circumferential surface (8)
Data Source
AI summary
The invention relates to an apparatus (1) for tensile testing of an optical fiber (11). In order to efficiently and simply test the optical fiber, the apparatus comprises a dual pulley (6) with a first circumferential surface (7) having a first diameter (D1) and with a second circumferential surface (8) having a second diameter (D2) which is larger than the first diameter (D1). A fiber inlet (10) which is delimited by the first circumferential surface (7) and the first drive belt section (2) contacts the first circumferential surface (7). A fiber outlet (13) which is delimited by the second circumferential surface (8) and the second drive belt section (3) contacts the second circumferential surface (8), and a guide (12) passes the optical fiber (11) from the fiber inlet (10) to the fiber outlet (13).