Tensile creep behavior of three-dimensional four-step braided SiC/SiC composite at elevated temperature

2017 ◽  
Vol 43 (9) ◽  
pp. 6721-6729 ◽  
Author(s):  
Xin Jing ◽  
Xiaoguang Yang ◽  
Duoqi Shi ◽  
Hongwei Niu
Keyword(s):  
Elevated Temperature ◽  
Creep Behavior ◽  
Three Dimensional ◽  
Tensile Creep

Characterization of the Microstructure, Tensile and Creep Behavior of Powder Metallurgy Processed and Rolled Ti-6Al-4V-1B Alloy

2010 ◽  
Vol 436 ◽  
pp. 195-203 ◽  
Author(s):  
Wei Chen ◽  
Carl J. Boehlert
Keyword(s):  
Elevated Temperature ◽  
Powder Metallurgy ◽  
Creep Behavior ◽  
Creep Deformation ◽  
Deformation Behavior ◽  
Creep Resistance ◽  
Tensile Creep ◽  
Duplex Microstructure ◽  
Α Phase

This work investigated the microstructure and elevated-temperature (400-475oC) tensile and tensile-creep deformation behavior of a powder metallurgy (PM) rolled Ti-6Al-4V-1B(wt.%) alloy. The PM rolled Ti-6Al-4V-1B alloy exhibited a duplex microstructure, and it did not exhibit a strong α-phase texture compared with the PM extruded Ti-6Al-4V-1B alloy. The PM rolled Ti-6Al-4V-1B alloy exhibited greater creep resistance than the PM extruded Ti-6Al-4V-1B alloy as well as the as-cast Ti-6Al-4V-1B alloy.

scholarly journals Multi-Response Optimization of Tensile Creep Behavior of PLA 3D Printed Parts Using Categorical Response Surface Methodology

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2962
Author(s):  
Muhammad Waseem ◽  
Bashir Salah ◽  
Tufail Habib ◽  
Waqas Saleem ◽  
Muhammad Abas ◽  
...  
Keyword(s):  
Creep Rate ◽  
Creep Behavior ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Rupture Time ◽  
Tensile Creep ◽  
Layer Height ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
3D Printed

Three-dimensional printed plastic products developed through fused deposition modeling (FDM) endure long-term loading in most of the applications. The tensile creep behavior of such products is one of the imperative benchmarks to ensure dimensional stability under cyclic and dynamic loads. This research dealt with the optimization of the tensile creep behavior of 3D printed parts produced through fused deposition modeling (FDM) using polylactic acid (PLA) material. The geometry of creep test specimens follows the American Society for Testing and Materials (ASTM D2990) standards. Three-dimensional printing is performed on an open-source MakerBot desktop 3D printer. The Response Surface Methodology (RSM) is employed to predict the creep rate and rupture time by undertaking the layer height, infill percentage, and infill pattern type (linear, hexagonal, and diamond) as input process parameters. A total of 39 experimental runs were planned by means of a categorical central composite design. The analysis of variance (ANOVA) results revealed that the most influencing factors for creep rate were layer height, infill percentage, and infill patterns, whereas, for rupture time, infill pattern was found significant. The optimized levels obtained for both responses for hexagonal pattern were 0.1 mm layer height and 100% infill percentage. Some verification tests were performed to evaluate the effectiveness of the adopted RSM technique. The implemented research is believed to be a comprehensive guide for the additive manufacturing users to determine the optimum process parameters of FDM which influence the product creep rate and rupture time.

The Effect of a “V” Notch on the Tensile Creep Behavior of Cr-Mo Steel

1962 ◽  
Vol 84 (2) ◽  
pp. 214-218
Author(s):  
Yoshitada Suezawa ◽  
Hidemitsu Ho¯jo¯
Keyword(s):  
Elevated Temperature ◽  
Stress Distribution ◽  
Creep Behavior ◽  
Structural Changes ◽  
Notch Root ◽  
Tensile Creep ◽  
Complete Analysis ◽  
Root Section ◽  
Notched Specimens ◽  
Smooth Bars

The effect of a “V” notch on the tensile creep behavior of Cr-Mo steel at elevated temperature was studied to elucidate the reasons for notch strengthening or notch weakening. Special attention was paid to changes in notch profile and dimensions, as well as to structural changes of the notched portion of the specimens with the lapse of time up to rupture. Some interesting results were obtained which are different from those of an ordinary tensile test or a creep test on smooth bars, and which are useful to the complete analysis of the stress distribution at the notch-root section of the notched specimens at any time after loading and, in turn, to clarify reasons for notch strengthening.

scholarly journals Study on Characterization of Compressive and Tensile Creep Behavior for Early Aged Concrete.

1998 ◽  
pp. 105-117
Author(s):  
Keishiro Iriya ◽  
Tatsuya Hattori ◽  
Hidetaka Umehara
Keyword(s):  
Creep Behavior ◽  
Tensile Creep

Three-Dimensional Numerical Analysis for Bolted Flange Joints Considering Effect of Creep

2018 ◽  
Author(s):  
Lewen Bi ◽  
Lanzhu Zhang
Keyword(s):  
High Temperature ◽  
Elevated Temperature ◽  
Numerical Analysis ◽  
Yield Strength ◽  
Room Temperature ◽  
Three Dimensional ◽  
Short Term ◽  
Flange Connection ◽  
Petroleum Chemical ◽  
Bolted Flange

Bolted flange joints are widely used in petroleum, chemical, nuclear and power industries, etc. With more and more devices are used at high temperature, the performance of flange connections becomes more complex, especially with creep of different components in flange connection. At elevated temperature, with the loss of bolt force and gasket force due to creep, the joints are prone to leak. Based on this, this paper analyzed the relaxation of bolt force at elevated temperature due to creep of bolt, flange and gasket separately and simultaneously. Besides, the influence of different initial installation stress of bolts was also studied. The results showed bolted flange joints relaxed due to gasket creep during early short term service. However, contribution of bolt and flange creep became more and more significant with the extension of time. With considering the creep of bolt, flange and gasket simultaneously, 50% to 60% of the bolt material yield strength at room temperature was recommended as the bolt initial installation stress for the joint case studied in this paper.

Sign in / Sign up

Export Citation Format

Share Document