scholarly journals A study of inelastic behavior of SUS-304 steel under biaxial loading at elevated temperature. 1st report Testing systen by use of personal computer and some experimental results.

1986 ◽  
Vol 52 (473) ◽  
pp. 49-57
Author(s):  
Hirokazu HAGA ◽  
Shoji IMATANI ◽  
Tatsuo INOUE
Keyword(s):  
Elevated Temperature ◽  
Personal Computer ◽  
Biaxial Loading ◽  
Experimental Results ◽  
Inelastic Behavior

The biaxial loading response of powder aluminum at elevated temperature

1994 ◽  
Vol 34 (3) ◽  
pp. 249-255 ◽  
Author(s):  
T. O. Woods ◽  
D. G. Berghaus
Keyword(s):  
Elevated Temperature ◽  
Biaxial Loading

Tensile Properties of Triaxially Woven Fabrics Under Biaxial Loading

1980 ◽  
Vol 102 (4) ◽  
pp. 327-332 ◽  
Author(s):  
P. Schwartz ◽  
R. E. Fornes ◽  
M. H. Mohamed
Keyword(s):  
Tensile Properties ◽  
Biaxial Loading ◽  
Unit Area ◽  
Woven Fabrics ◽  
Experimental Results ◽  
Cover Factor ◽  
Axes Of Symmetry ◽  
Good Agreement ◽  
Loading Analysis

Classical results in the behavior of woven fabrics are extended to the case of fabrics having three planar, nonorthogonal axes of symmetry (triaxial). The biaxial loading analysis due to Grosberg is extended to the loading of triaxial fabrics in the machine and cross-machine directions in an attempt to predict fabric modulus during the crimp removal stage. Preliminary experimental results showing reasonably good agreement with moderately open fabrics are given. In addition, relationships are developed to allow the construction of conventional fabrics which are equivalent to triaxial fabrics in terms of cover factor and intersections or interfacings per unit area.

Isothermal Rolling of Mg-Based Laminated Composites Made by Explosion Cladding

2010 ◽  
Vol 443 ◽  
pp. 614-619 ◽  
Author(s):  
Xin Ping Zhang ◽  
Ming Jen Tan ◽  
Ting Hui Yang ◽  
Jing Tao Wang
Keyword(s):  
Finite Element ◽  
Composite Material ◽  
Elevated Temperature ◽  
Magnesium Alloy ◽  
Finite Element Methods ◽  
Strain Distribution ◽  
Experimental Results ◽  
Az31 Magnesium Alloy ◽  
Al Alloy ◽  
Layer Composite

Rolling of Al-Mg-Al tri-layer composite material fabricated by the explosion cladding method was simulated using finite element methods. The rolling temperature was determined based on the flow stresses of AZ31 magnesium alloy and 7075 Al alloy at elevated temperature. The strain distribution in the plates during rolling and effects of the reduction ratio on the separation in the Al/Mg/Al laminate were studied. The simulation agrees with experimental results.

Development of a Program for High-Temperature Design Analysis and Defect Assessment According to RCC-MRx

2018 ◽  
Author(s):  
Hyeong-Yeon Lee ◽  
Min-Gu Won ◽  
Nam-Su Huh ◽  
Woo-Gon Kim
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Personal Computer ◽  
Heat Exchangers ◽  
Fusion Reactor ◽  
Design Analysis ◽  
Design Evaluation ◽  
Web Based ◽  
Defect Assessment ◽  
Class 1

A program for a high-temperature design analysis and defect assessment has been developed for an elevated temperature evaluation according to the RCC-MRx for Generation IV and fusion reactor systems. The program, called ‘HITEP_RCC-MRx,’ consists of three modules: ‘HITEP_RCC-DBA,’ which computerizes the design-by-analysis (DBA) for class 1 components such as the pressure vessel and heat exchangers according to RB-3200 procedures, ‘HITEP_RCC-PIPE,’ which computerizes the design-by-rule (DBR) analysis for class 1 piping according to RB-3600 procedures and ‘HITEP_RCC-A16,’ which computerizes high-temperature defect assessment according to the A16 procedures. It is a web-based program, and thus can operate on a smartphone as well as on a personal computer once it is connected to the URL. The program has been verified with a number of relevant example problems on DBA, Pipe, and A16. It was shown from the verification works that HITEP_RCC-MRx with the three modules conducts a design evaluation and a defect assessment in an efficient and reliable way.

A Combined Model for Hardening, Softening, and Damage Processes in Advanced Heat Resistant Steels at Elevated Temperature

2010 ◽  
Vol 20 (4) ◽  
pp. 578-597 ◽  
Author(s):  
Konstantin Naumenko ◽  
Holm Altenbach ◽  
Andreas Kutschke
Keyword(s):  
Elevated Temperature ◽  
Damage Mechanics ◽  
Volume Fraction ◽  
Rupture Strength ◽  
Axial Stress ◽  
Constant Strain Rate ◽  
Primary Creep ◽  
Tertiary Creep ◽  
Inelastic Behavior ◽  
Damage Processes

Phenomenological constitutive equations that describe inelastic behavior of advanced steels at elevated temperature are developed. To characterize hardening, recovery, and softening processes, a composite model with creep-hard and creep-soft constituents is applied. The volume fraction of the creep-hard constituent is assumed to decrease toward a saturation value. This approach reproduces well the primary creep as a result of stress redistribution between constituents and tertiary creep as a result of softening. To describe the whole tertiary creep stage, a damage variable in the sense of continuum damage mechanics is introduced. The material parameters and the response functions in the model are calibrated against experimental creep curves for X20CrMoV12-1 steel. For the verification, simulations of the inelastic response are performed and the results compared with experimental data including creep under stress change conditions and stress-strain response under constant strain rate. Furthermore, the lifetime predictions are analyzed and compared with the published creep rupture strength data. The results show that the consideration of both softening and damage processes is necessary to characterize the long-term strength in a wide stress range. Finally, the model is generalized to the multi-axial stress state.

scholarly journals A Novel Fabrication Technique for Developing Metal Nanodroplet Arrays

2006 ◽  
Vol 940 ◽  
Author(s):  
Christopher Edgar ◽  
Chad Johns ◽  
M. Saif Islam
Keyword(s):  
Elevated Temperature ◽  
Large Scale ◽  
Droplet Diameter ◽  
Experimental Results ◽  
Fabrication Technique ◽  
Rayleigh Instability ◽  
Linear Arrays ◽  
Nanoscale Particles

ABSTRACTMetal patterned lines on a substrate have been annealed and broken down into isolated linear arrays of alloyed metal nanoscale droplets. These droplets are selectively fabricated across large-scale areas by controlling the location metal is present on a substrate. The metal instability and formation into nanoscale particles forms similar to studies in Rayleigh Instability of metal at an elevated temperature. Experimental results discussed here show a change in droplet diameter and formation by controlling the metal width.

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