Calibration of hoop stress in ring tensile test with Zircaloy-4 tube

Yoon, Jonghun; Kim, J.; Kim, H.; Won, Chan-Hee; Song, Yun-Heub; Park, S. H.

doi:10.1007/s12206-017-0815-8

Cited by 12 publications

(4 citation statements)

References 17 publications

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“…One of these non-conventional techniques is the ring tensile test, which involves the use of two D-shaped blocks (mandrels) fitted into the ring and opposite forces applied to the D-blocks until the ring ruptures. Researchers such as Ktari et al [2], Frolov et al [3], Gurovich et al [4], and Yoon et al [5] have studied this technique. Barsoum et al [6] used two mandrel designs: one with lubricated D-shaped blocks and the other using lubricated D-shaped blocks with needle roller bearing (which decreased friction coefficient into ~ 50% of its value upon using needle bearing), also further investigation was carried out to optimize the ring specimen with a reduction in its cross-section to maintain a uniform stress distribution along the gauge length and give a fracture at the center of the specimen.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Seamless Pipes Using Ring Expansion Technique and Novel Hoop Stress Correlation Factor (K)

Abdelgawad,

Nassef,

Eraky

et al. 2023

Exp Tech

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This study investigated the stress–strain behavior of seamless pipes in the hoop direction using the ring expansion test, which is a non-standardized mechanical testing technique used for evaluating the mechanical properties of round tubes. However, this technique has limitations, such as unidentified specimen geometry, strain measurement, and the estimation of friction coefficients. The study employed experimental, numerical, and analytical methodologies to address these limitations and throughout the study, a novel hoop stress correlation factor (K) was identified to be multiplied by the hoop stress derived equation for reduced section ring specimens. The experimental strain was measured using a newly derived analytical equation, and a mathematical predictive model was developed to estimate the K-factor using the Design of Experiment (DoE) and Design-Expert statistical software. The study concluded that the ring expansion test is a promising technique for evaluating the mechanical properties of seamless pipes similar to the unified axial tensile stress–strain behavior. However, future research is needed to estimate the hoop stress correlation value (K) for all ring geometries. The study's finding of the novel hoop stress correlation factor (K) in the case of a reduced section ring specimen is particularly noteworthy, as it addresses a significant research gap in the field.

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Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Seamless Pipes Using Ring Expansion Technique and Novel Hoop Stress Correlation Factor (K)

Abdelgawad,

Nassef,

Eraky

et al. 2023

Exp Tech

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“…Uji tarik ring telah dikembangkan oleh beberapa peneliti sebelumnya dengan menggunakan gauge T [8]. Optimalisasi juga pernah dilakukan oleh Nagase dkk, dengan single gauge T pada cincin [9] dan telah dikaji juga oleh Yoon [10]. Pada penelitian sebelumnya, uji tarik berbentuk ring ini telah dikembangkan untuk pengujian bahan bakar kelongsong pasca iradiasi di Indonesia [11].…”

Section: Pendahuluanunclassified

Analisis Ketidakpastian Pengukuran Kekuatan Tarik Dan Elongasi Spesimen Ss304 Berbentuk Ring

Ismarwanti

Setiawan

Ajiriyanto

et al. 2021

urania

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ANALISIS KETIDAKPASTIAN PENGUKURAN KEKUATAN TARIK DAN ELONGASI SPESIMEN SS304 BERBENTUK RING. Ketidakpastian adalah tolok ukur dari kehandalan suatu pengukuran. Salah satu pendekatan analisa ketidakpastian yang banyak digunakan adalah dengan menggunakan Guide to the expression of uncertainty in measurement (GUM). Langkah-langkah untuk menganalisa ketidakpastian dari suatu pengukuran telah dijelaskan secara rinci oleh pendekatan GUM. Analisa ketidakpastian dilakukan pada pengujian tarik untuk mengetahui ketertelusuran data yang diperoleh. Pengujian tarik menghasilkan data berupa kekuatan tarik dan elongasi dari material uji. Kekuatan tarik adalah besaran yang melibatkan besaran gaya dan panjang. Elongasi adalah penambahan panjang saat dilakukan penarikan. Kekuatan tarik pada sampel berbentuk ring akan dipengaruhi oleh luas penampang pada kedua belah sisi ring ketika diberikan tegangan tarik. Sehingga untuk menentukan ketidakpastian pengujian tarik akan memerlukan analisa terhadap penyumbang ketidakpastian. Makalah ini memberikan penjelasan bagaimana cara untuk menganalisa ketidakpastian pengukuran kekuatan tarik dan elongasi pada sampel berbentuk ring. Selain itu juga akan diperoleh nilai ketidakpastian pengukuran kekuatan tarik dan elongasi SS304 berbentuk ring. Dari pengujian yang dilakukan dapat diketahui bahwa kekuatan tarik ring SS304 rata-rata adalah 631,070 ± 26,976 Nmm-2 dengan ketidakpastian diperluas sebesar 50,451 Nmm-2 pada tingkat kepercayaan 95%. Selain itu pada tingkat kepercayaan yang sama diperoleh hasil elongasi ring SS304 rata-rata 18,681% ± 2,425% dengan ketidakpastian diperluas sebesar 2,867%. Keberulangan data atau repeatability menjadi penyumbang terbesar terhadap ketidakpastian pengukuran kekuatan tarik dan elongasi ring SS304.Kata kunci: Ketidakpastian, GUM, kekuatan tarik, elongasi, ring SS304.

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“…Zirconium alloy is used in nuclear fission reactor applications due to its superior mechanical properties compared to other structural material like stainless steel [22]. Zirconium alloys have a good combination of strength and ductility, high corrosion and oxidation resistance and a low neutron absorption cross section area [23][24][25][26]. Residual stresses are induced into the materials due to plastic deformation, annealing, phase transformation and welding in material components [27].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis and Experimental Evaluation of Residual Stress of Zr-4 alloys Processed through Swaging

Singh

Kalita

Narayanan³

et al. 2020

Metals

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Zirconium alloy has been extensively used as a cladding material in nuclear power reactors due to its low neutron absorption cross section, excellent mechanical properties, and corrosion resistance. The influence of the swaging parameter, feed rate (0.7, 1.25, 2 m/min) on residual stress induced in Zr-4 alloy is investigated in the present work. A three-dimensional finite element model was implemented in the Deform 3D software to simulate the rotary swaging (RS) process over a circular rod of Zr-4 alloy. The simulation results based on the 3D framework provide a detailed insight of residual stress, true stress versus true strain and force applied over the rod during the multiple pass swaging process; the results are compared with experimental results. The experimental hole drilling method is used to determine the residual stresses on swaged zirconium alloy at different feed rates (0.7, 1.25, and 2 m/min). A similar trend of residual stress between experimental and numerical results from the surface to the center on the swaged rod samples is observed. The same magnitude of residual stress at the surface of the swaged Zr-4 rod is also observed. It is found to be compressive at the surface and tensile in the center of the samples, as observed in the present work.

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Calibration of hoop stress in ring tensile test with Zircaloy-4 tube

Cited by 12 publications

References 17 publications

Mechanical Behavior of Seamless Pipes Using Ring Expansion Technique and Novel Hoop Stress Correlation Factor (K)

Mechanical Behavior of Seamless Pipes Using Ring Expansion Technique and Novel Hoop Stress Correlation Factor (K)

Analisis Ketidakpastian Pengukuran Kekuatan Tarik Dan Elongasi Spesimen Ss304 Berbentuk Ring

Finite Element Analysis and Experimental Evaluation of Residual Stress of Zr-4 alloys Processed through Swaging

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