Ratcheting effect of reinforced graphite sheet with stainless steel insert (RGSWSSI) under cyclic compression at elevated temperature

X.T. Zheng, W.C. Dai, H.F. Chen, J. Shen

Research output: Contribution to journalArticle

Abstract

Ratcheting and creep of RGSWSSI are tested under cyclic stress-controlled compression by a self-designed clamp from 500ºC to 600ºC. The effects of insert type, temperature, stress amplitude, stress rate, creep and loading sequence are considered. Results present that ratcheting deformations for RGSWSSI with 316L stainless steel tanged and bonded insert approach to each other and show little rate-dependence, while they slightly increase with the increment of stress amplitude and temperature. Moreover, obvious ratcheting effect takes place under cyclic pulsating loads with the peak stress of 32MPa at 500ºC or higher. The accumulated deformations of RGSWSSI under small stress amplitude only increase during about the first 25 cycles, and then always turn to shakedown. It can also be estimated by the corresponding static creep strain in practical engineering with good accuracy at high temperature. This work provides important data and understanding of RGSWSSI under harsh fluctuating loads.
LanguageEnglish
JournalFatigue and Fracture of Engineering Materials and Structures
Publication statusAccepted/In press - 25 Apr 2018

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Die casting inserts
Graphite
Stainless Steel
Compaction
Stainless steel
Creep
Temperature
Cyclic loads
Clamping devices

Keywords

  • reinforced graphite sheet
  • cyclic compression
  • ratcheting
  • creep
  • elevated temperature

Cite this

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title = "Ratcheting effect of reinforced graphite sheet with stainless steel insert (RGSWSSI) under cyclic compression at elevated temperature",
abstract = "Ratcheting and creep of RGSWSSI are tested under cyclic stress-controlled compression by a self-designed clamp from 500ºC to 600ºC. The effects of insert type, temperature, stress amplitude, stress rate, creep and loading sequence are considered. Results present that ratcheting deformations for RGSWSSI with 316L stainless steel tanged and bonded insert approach to each other and show little rate-dependence, while they slightly increase with the increment of stress amplitude and temperature. Moreover, obvious ratcheting effect takes place under cyclic pulsating loads with the peak stress of 32MPa at 500ºC or higher. The accumulated deformations of RGSWSSI under small stress amplitude only increase during about the first 25 cycles, and then always turn to shakedown. It can also be estimated by the corresponding static creep strain in practical engineering with good accuracy at high temperature. This work provides important data and understanding of RGSWSSI under harsh fluctuating loads.",
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TY - JOUR

T1 - Ratcheting effect of reinforced graphite sheet with stainless steel insert (RGSWSSI) under cyclic compression at elevated temperature

AU - Zheng, X.T.

AU - Dai, W.C.

AU - Chen, H.F.

AU - Shen, J.

PY - 2018/4/25

Y1 - 2018/4/25

N2 - Ratcheting and creep of RGSWSSI are tested under cyclic stress-controlled compression by a self-designed clamp from 500ºC to 600ºC. The effects of insert type, temperature, stress amplitude, stress rate, creep and loading sequence are considered. Results present that ratcheting deformations for RGSWSSI with 316L stainless steel tanged and bonded insert approach to each other and show little rate-dependence, while they slightly increase with the increment of stress amplitude and temperature. Moreover, obvious ratcheting effect takes place under cyclic pulsating loads with the peak stress of 32MPa at 500ºC or higher. The accumulated deformations of RGSWSSI under small stress amplitude only increase during about the first 25 cycles, and then always turn to shakedown. It can also be estimated by the corresponding static creep strain in practical engineering with good accuracy at high temperature. This work provides important data and understanding of RGSWSSI under harsh fluctuating loads.

AB - Ratcheting and creep of RGSWSSI are tested under cyclic stress-controlled compression by a self-designed clamp from 500ºC to 600ºC. The effects of insert type, temperature, stress amplitude, stress rate, creep and loading sequence are considered. Results present that ratcheting deformations for RGSWSSI with 316L stainless steel tanged and bonded insert approach to each other and show little rate-dependence, while they slightly increase with the increment of stress amplitude and temperature. Moreover, obvious ratcheting effect takes place under cyclic pulsating loads with the peak stress of 32MPa at 500ºC or higher. The accumulated deformations of RGSWSSI under small stress amplitude only increase during about the first 25 cycles, and then always turn to shakedown. It can also be estimated by the corresponding static creep strain in practical engineering with good accuracy at high temperature. This work provides important data and understanding of RGSWSSI under harsh fluctuating loads.

KW - reinforced graphite sheet

KW - cyclic compression

KW - ratcheting

KW - creep

KW - elevated temperature

UR - https://onlinelibrary.wiley.com/journal/14602695

M3 - Article

JO - Fatigue and Fracture of Engineering Materials and Structures

T2 - Fatigue and Fracture of Engineering Materials and Structures

JF - Fatigue and Fracture of Engineering Materials and Structures

SN - 8756-758X

ER -