軌道運輸的發展帶來了相當的便利性，但軌道系統在長期運行下，鋼軌的斷面磨耗以及波狀磨耗造成了一定的行車安全與震動噪音等影響。因此定期的檢測鋼軌磨耗並以磨耗結果制定養護目標就顯得非常重要。目前的軌道檢測多仰賴國外的量測儀器與技術，國內自主的研發能力方面尚有許多不足。
本研究嘗試將光學輪廓感測器與旋轉編碼器，結合在實驗室自製的軌道檢測台車上，並以此作為量測磨耗的工具，以量測結果加上資料後處理計算出鋼軌的斷面磨耗與波狀磨耗。並以簡易的磨耗測定器以及波狀磨耗量測儀的量測結果進行比較及驗證。
於成功大學試驗軌的動靜態測試中，觀察到此系統可符合EN-13231斷面磨耗的量測精度要求，可達毫米等級以下，然而ISO3095波狀磨耗的精度要求非常嚴苛，為微米等級，量測精度不足的情況下無法得到正確的波長譜。而於台鐵沙崙支線的量測結果中，顯示出以本研究的量測方式，足以觀察到現地彎道段，新舊鋼軌與高低軌的斷面磨耗變化趨勢並可比較其差異，而波狀磨耗的部分仍無法得到現地較嚴重波狀磨耗的特徵波長。

Rail wear is a problem caused by the interaction of rail and wheel. The rail wear grows with the transportation, which would gradually lead to the vibration and the noise problems. Therefor a wear measuring method plays an important role for rail maintenance. Since we do not have our own technique in Taiwan and the systems widely used in railway industries are usually expensive and complicated.
In this work, we assemble an optical profilometer and the encoder to build a simple track inspection trolley. Use this trolley to capture the data of rail profile and try to compute the rail wear and rail corrugation after analysis. Then compare the results with the Corrugation Analysis Trolley(CAT) and wear measuring instrument to check the accuracy and the precision is enough or not.
In the test in NCKU showed that the system can achieve the precision to millimeter, which can satisfy the requirement of measuring transverse profile in standard EN13231. But the rail corrugation need to have the precision small than micrometer in order to find the wavelength of corrugation in the form of standard ISO3095. And the test in the track of Taiwan Railways Administration(TRA) Shalun Line showed that the system can find the wear variation between high rail and low rail in the curve. But the correct corrugation wavelength spectrum still not be found due to the precision.

1.APT公司http://www.aptrail.com/products/measurement/apt-rsa.asp.
2.BS EN 15610:2009 Railway applications - Noise emission - Rail roughness measurement related to rolling noise generation, 2009.
3.ENSCO公司http://ensco.com/rail/track-measurement-systems.
4.ISO 3095, in Acoustics - Railway applications - Measurement of noise emitted by railbound vehicles, International Organization for Standardization: Geneva, 2005.
5.KLDLABS公司http://www.kldlabs.com/?page_id=64.
6.Mermec公司http://www.mermecgroup.com/inspect/track-measurement/60/rail-profile.php.
7.丹麥Greenwood Engineering公司https://www.greenwood.dk/miniprofrail.php.
8.Bruni, S. and F. Braghin, 15 - Effect of damage on vehicle dynamics, in Wheel–Rail Interface Handbook, Woodhead Publishing. p. 456-476, 2009.
9.De Man, A.P., Pin-pin resonance as a reference in determining ballasted railway track vibration behaviour. Heron, 2000.
10.Esveld, C., Modern Railway Track. MRT-Productions, 2001.
11.Fletcher, D.I., F.J. Franklin, and A. Kapoor, 9-Rail surface fatigue and wear, in Wheel–Rail Interface , Woodhead Publishing. p. 280-310 Handbook, 2009.
12.Grassie, S.L., Rail corrugation: characteristics, causes, and treatments. Proceedings of the Institution of Mechanical Engineers Part F-Journal of Rail and Rapid Transit. 223(6): p. 581-596, 2009.
13.Grassie, S.L., Rail irregularities, corrugation and acoustic roughness: characteristics, significance and effects of reprofiling. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 226(5): p. 542-557. 2012.
14.Grassie, S.L. and J.A. Elkins, Rail Corrugation on North American Transit Systems. Vehicle System Dynamics, 29(sup1): p. 5-17, 1998.
15.Hunt, G.A., B.Sc, Track Technology Course. British Rail Research, 1993.
16.Magel, E., et al., Rolling contact fatigue, wear and broken rail derailments. Wear, 366(Supplement C): p. 249-257, 2016.
17.Wang, C., et al., Distortion calibrating method of measuring rail profile based on local affine invariant feature descriptor. Measurement, 110(Supplement C): p. 11-21, 2017.
18.交通部, 1067公厘軌距道橋隧檢查養護規範, 1997.
19.任靜, 城市轨道交通快线轮轨侧磨成因及防治. 都市快軌交通, 24(5): p. 2-5, 2011.
20.余偉澤, 以雷射位移計檢測鋼軌波狀磨耗之研究,國立成功大學, 土木工程研究所, 2014.
21.朱旭, 國立台灣科技大學軌道工程講義, 2010.
22.黃翊耘, 鋼軌波狀磨耗對軌道振動及噪音的影響, 國立成功大學, 土木工程研究所, 2016.