Failure analysis of railroad couplers of AAR type E

Chunduru, Seshu P.; Kim, Meung J.; Mirman, Clifford

doi:10.1016/j.engfailanal.2010.09.016

Cited by 20 publications

(7 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Penelitian terdahulu telah dilakukan, salah satunya oleh Wang et al Mereka meneliti distribusi tegangan pada knuckle coupler yang digunakan kereta pengangkut barang sehingga dapat dilakukan improvement terhadap keamanan serta durasi masa gunanya [1]. Sedangkan untuk tipe knuckle jaw, Chunduru et al menganalisis kemungkinan kegagalan yang terjadi akibat tingkat konsentrasi tegangan yang tinggi pada permukaan bagian dalam knuckle jaw [2]. Penelitian lain dilakukan oleh Steed dan Kimpton, yang mana menganalisis peningkatan kekuatan statik pada coupler knuckle [3].…”

Section: Pendahuluanunclassified

See 1 more Smart Citation

Perancangan Coupler untuk LRT di Indonesia

Priyambodo

Syaifudin

2019

JTITS

View full text Add to dashboard Cite

INKA menggunakan coupler tipe knuckle, yang biasa dipakai untuk kereta api, untuk sambungan gerbong pada kereta ringan (light rail transit, LRT). Namun, pemakaian coupler tipe ini sangat tidak sesuai sebab coupler untuk kereta api dapat menarik beban hingga 42 ton, sedangkan berat gerbong LRT hanya 25 ton. Dalam penelitian ini, dilakukan studi numerik untuk redesign ukuran coupler. Optimasi ukuran dipilih sebagai basis dalam metode redesign. Analisis numerik dilakukan dengan bantuan Catia Simulia V6-Structural Validation. Material yang digunakan adalah AAR M201 grade E dan grade D sesuai dengan yang digunakan oleh PT INKA. Beban yang diterapkan adalah beban aktual LRT Jabodebek dengan jumlah trainset 6 buah. Optimasi ukuran dilakukan dengan reduksi ukuran head coupler knuckle hingga 50%. Panjang leher coupler dipertahankan untuk menyesuaikan dengan ruang sambungan pada carbody. Analisis angka keamanan dilakukan pada tiap model yang telah direduksi. Hasil simulasi mengindikasikan bahwa ukuran coupler yang paling optimum, yaitu ukuran pada skala reduksi 80% dari model awal. Tegangan tarik dan tekan maksimum yang terjadi berturut-turut sebesar 450 MPa dan 308 MPa, yang mana masih berada dalam zona aman.

show abstract

Section: Pendahuluanunclassified

“…Model material dari kedua material ini adalah isotropik yang memiliki kesamaan sifat ketika mendapat pem-bebanan dari arah yang berbeda. Material ini biasa digunakan pada alat-alat berat karena tersusun dari mikrostruktur martensite yang halus dan merata sehingga material tersebut memiliki ketangguhan yang tinggi [2].…”

Section: A Model Materialsunclassified

Perancangan Coupler untuk LRT di Indonesia

Priyambodo

Syaifudin

2019

JTITS

View full text Add to dashboard Cite

show abstract

“…Although failure analysis of machinery supports for fique processing has not been reported in the literature until now, various movable and structural mechanical components have failed due to the fatigue phenomenon [1][2][3], many as a result of stress concentration [1][2][3] and heterogeneous microstructures, such as those obtained in casting processes [1].…”

Section: Introductionmentioning

confidence: 99%

Failure analysis of a machine support for fique fibre processing

Delgado

Coronado

Rodríguez

2015

Engineering Failure Analysis

View full text Add to dashboard Cite

“…Researchers have widely researched materials for couplers. Chunduru et al [1] investigated the failures in AAR couplers type E. The mechanism of brittle fracture failure in knuckle couplers caused by micro-cracks is reported by Huang et al [2]. Steed et al [3] improved a coupler design and checked for failures.…”

Section: Introductionmentioning

confidence: 99%

Enhancing S45C steel for the primary component of an automatic coupler using quench-tempering techniques

Valentino,

Pramono,

Syaifudin

et al. 2024

J Appl Eng Science

View full text Add to dashboard Cite

Coupling links and hooked plates constitute the primary components of automatic couplers in trains, enduring substantial tensile and compressive loads during train connections. This study endeavours to enhance the strength of S45C material through heat treatment techniques. The research commenced with the preparation of JIS S45C tensile test specimens adhering to ASTM E8 standards. The material's chemical composition was validated using an Optical Emission Spectrometer (OES). Six heat treatment variations were employed, including quench oil without tempering (QO), quenching water without tempering (QW), quenching oil tempered at 660°C (QOT660), quenching water tempered at 660°C (QWT660), quenching oil tempered at 550°C (QOT550), quenching water tempered at 550°C (QWT550), alongside untreated conditions (NT) for comparison. The efficacy of heat treatment was evaluated through tensile testing, optical metallographic analysis, and micro-Vickers hardness tests. QO and QW scenarios were excluded from the tensile tests. Results revealed that QWT550 demonstrated the most substantial enhancement in material yield, exhibiting a 115% increase. Moreover, hardness testing indicated superior hardness in QWT550 specimens compared to other tempered variants. The metallographic analysis illustrated the formation of identical and smooth martensitic structures. Overall, the combination of cooling heat treatment and tempering proved sufficient to meet the design requirements of hooked plates and coupling links for automatic couplers.

show abstract

Failure analysis of railroad couplers of AAR type E

Cited by 20 publications

References 3 publications

Perancangan Coupler untuk LRT di Indonesia

Perancangan Coupler untuk LRT di Indonesia

Failure analysis of a machine support for fique fibre processing

Enhancing S45C steel for the primary component of an automatic coupler using quench-tempering techniques

Contact Info

Product

Resources

About