بررسي و ارزيابي روش‌هاي كنترل كيفيت ادوات پابند و پيشنهاد ساختار مناسب جهت خطوط ريلي در راه‌آهن ايران

eva‎luation of quality control in railway fastener system, propose of an‎d efficient methodology for in Iranian railway

مهندسي راه آهن و برنامه ريزي حمل و نقل

Rail fasteners are considered one of the vital components used an‎d operated within the railway track structure. Due to the diversity of these systems, their eva‎luation an‎d quality control require special attention. A review of the literature indicates that various methods are employed globally to assess these systems. Similarly, the diversity present in Iran’s railway lines highlights the need to develop a quality control plan for these components. The literature review also shows that, so far, no comprehensive method has been formulated in Iran for eva‎luating an‎d controlling the quality of these components. The present study aims to develop a quality control framework for rail fastening systems. Accordingly, this research investigates various existing quality control methods used to assess the performance of fastening components. Then, from among the reviewed methods, a quality control methodology is developed an‎d applied to sample fasteners. The findings of this study show that there are two general approaches in the literature: performance eva‎luation an‎d material eva‎luation. Based on these, both methods were examined, an‎d a set of material quality control tests an‎d performance tests were conducted on the fasteners. The aforementioned tests include 9 performance tests (longitudinal resistance, torsional resistance, impact resistance, salt spray, rail clamping force, electrical resistance, pull-out resistance, stiffness, an‎d fatigue) an‎d material tests (tensile, chemical composition, hardness, fatigue, an‎d bending). Based on these tests, an algorithm was developed an‎d proposed for eva‎luating the performance an‎d quality control of rail fasteners.

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