Experimental Investigation on the Influence of Water Content on Mechanical Properties and Failure Characteristics of Tuff

2021 ◽  
Author(s):  
Yanqi Song ◽  
Hongfa Ma ◽  
Xiangshang Li ◽  
Junjie Zheng ◽  
Minjian Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Water Content ◽  
Failure Characteristics ◽  
Influence Of Water

scholarly journals Influence of Water Content on the β-Sheet Formation, Thermal Stability, Water Removal, and Mechanical Properties of Silk Materials

2016 ◽  
Vol 17 (3) ◽  
pp. 1057-1066 ◽  
Author(s):  
Kenjiro Yazawa ◽  
Kana Ishida ◽  
Hiroyasu Masunaga ◽  
Takaaki Hikima ◽  
Keiji Numata
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Water Content ◽  
Water Removal ◽  
Influence Of Water ◽  
Β Sheet

scholarly journals Effect of steam autoclaving on laser sintered polyamide 12

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
James Robert Wingham ◽  
Maha Omran ◽  
Joanna Shepherd ◽  
Candice Majewski
Keyword(s):  
Mechanical Properties ◽  
Water Content ◽  
Elongation At Break ◽  
Content Type ◽  
Polyamide 12 ◽  
Root Cause ◽  
Medical Sector ◽  
Influence Of Water ◽  
The Difference ◽  
Direct Use

Purpose The use of laser sintering (LS) in the medical sector has increased dramatically in recent years. With the move towards direct use of these parts in clinical applications, there is a greater need to understand the effects of standard processes on the part properties. The purpose of this study is to determine the effect that steam sterilisation has on the mechanical properties of LS polyamide 12 parts. Design/methodology/approach The research presented here focusses on the effect of a single steam sterilisation cycle on the mechanical properties of polyamide 12 parts manufactured using LS. The influence of water content on the properties was investigated, with additional drying steps trialled to establish the potential to reverse any changes observed and to determine their root cause. Findings The results show that steam sterilisation has a significant effect on the mechanical properties of LS polyamide 12 parts, with a 39% reduction in elastic modulus, a 13% decrease in ultimate tensile strength and a 64% increase in the elongation at break. These properties were also all found to correlate with the water content, suggesting that this was the cause of the difference. The original properties of the parts were able to be recovered after oven drying. Practical implications These results show that with an additional drying step, LS polyamide 12 parts can be steam sterilised with no effect on the mechanical properties. Originality/value This is believed to be the first investigation into the effects of steam sterilisation in isolation on LS polyamide 12 parts, the first instance of drying parts to recover mechanical properties and the first instance of multiple water content measurements being directly linked to the mechanical properties.

scholarly journals Experimental Investigation on the Influence of Water Content on the Mechanical Properties of Coal under Conventional Triaxial Compression

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Meichang Zhang ◽  
Rongshan Nie
Keyword(s):  
Mechanical Properties ◽  
Elastic Modulus ◽  
Internal Friction ◽  
Water Content ◽  
Triaxial Compression ◽  
Friction Angle ◽  
Conventional Triaxial Compression ◽  
Influence Of Water ◽  
Confining Pressures ◽  
Water Contents

The presence of water is one of the most important factors in coal mining, and it has a dual influence on the mechanical behavior of rock. To study the influence of water content on the mechanical properties of coal under complicated stress conditions, dry coal specimens and wet coal specimens with water contents of 1.8% and 3.6% were conducted by uniaxial and conventional triaxial compression tests. The relations between the uniaxial compressive strength, deformation, and water content were observed. The reductions in the strength and elastic modulus under different confining pressures were obtained. The mechanical properties of coal specimens with different water contents under triaxial compression were studied. The influences of water content on the microstructure, clay minerals, internal friction angle, and cohesive force of coal were discussed. The results show that the strengths and elastic moduli of wet specimens are clearly lower than those of dry specimens under different confining pressures. The water content has a significant influence on the postfailure mechanical behavior of coal. The loss rates of strength and elastic modulus decrease with increasing confining pressure. The water content has almost no effect on the internal friction angle, while the cohesive force of the saturated specimens is 36.5% lower than that of the dry specimens. The results can provide a reference for inhibiting the occurrence of disasters during coal mining and exploiting coal efficiently.

Influence of Water Content on Mechanical Properties of Rock in Both Saturation and Drying Processes

2016 ◽  
Vol 49 (8) ◽  
pp. 3009-3025 ◽  
Author(s):  
Zilong Zhou ◽  
Xin Cai ◽  
Wenzhuo Cao ◽  
Xibing Li ◽  
Cheng Xiong
Keyword(s):  
Mechanical Properties ◽  
Water Content ◽  
Influence Of Water

scholarly journals INFLUENCE OF WATER CONTENT ON THE MECHANICAL PROPERTIES OF WOOD EXPOSED TO FIRE

2017 ◽  
Vol 82 (732) ◽  
pp. 299-308
Author(s):  
Chihiro KAKU ◽  
Yuji HASEMI ◽  
Daisuke KAMIKAWA ◽  
Tatsuro SUZUKI ◽  
Noboru YASUI ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Water Content ◽  
Influence Of Water

Mechanical and thermal behaviour of food waste (Citrus limetta peel) fillers–based novel epoxy composites

2019 ◽  
Vol 27 (9) ◽  
pp. 527-535 ◽  
Author(s):  
Hitesh Sharma ◽  
Inderdeep Singh ◽  
Joy Prakash Misra
Keyword(s):  
Mechanical Properties ◽  
Experimental Investigation ◽  
Morphological Analysis ◽  
Agricultural Waste ◽  
Thermal Characterization ◽  
General Purpose ◽  
Degradation Behaviour ◽  
Failure Characteristics ◽  
Ep Matrix ◽  
Citrus Limetta

The present research venture focuses on utilization of food and agricultural waste Citrus limetta (musambi) peel by using it as a filler material to develop novel epoxy (EP) composites. Experimental investigation has been performed to analyse the influence of C limetta (musambi) peel particles (CLPP) on mechanical properties (tensile, flexural and impact strength) of the developed composites. Different loadings by weight percentages (0, 5, 10 and 15 wt%) of filler have been used to explain the variation in mechanical properties. Along with effect of different filler percentages, failure characteristics of the prepared samples have also been studied. The results indicate that higher CLPP content in EP matrix has a detrimental effect on mechanical properties of manufactured biocomposites. Thermal characterization was performed to analyse the degradation behaviour and the onset temperature. Morphological analysis of the fractured surfaces was also conducted with the help of a scanning electron microscope. The current experimental investigation has revealed that CLPP can be used as a potential filler for manufacturing biocomposites with applications in general purpose interior fitments in addition to various non-structural components.

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