scholarly journals Experimental study on slip resistance performance of ASTM A1010 stainless steel bolted connections

2021 ◽  
Author(s):  
Omar Cameron
Keyword(s):  
Stainless Steel ◽  
Structural Steel ◽  
Surface Condition ◽  
Test Method ◽  
Effect Of Temperature ◽  
Resistance Testing ◽  
Slip Coefficient ◽  
Steel Material ◽  
Slip Resistance ◽  
Stainless Steel Material

The primary aim of this experimental research was to provide information on the slip coefficient performance of ASTM A1010 stainless steel material and to ascertain if its behaviour is comparable to that of 350W Structural Steel. In accomplishing this task, it was important to examine other parameters associated with slip resistance testing, such as (i) bolt relaxation and (ii) the effect of temperature variation and re-usability of high strength bolts. In the 2014 edition of the Canadian Highway Bridge Design Code, the slip coefficient for clean mill scale and hot dip galvanized surface condition for the 350W structural steel is specified as 0.35, whereas for blasted-clean surface condition is specified as 0.5. Although test results in this research showed lower values for tested structural steel plates, the slip coefficient of A1010 stainless steel material performed better than the 350W structural steel for each surface condition and at the same temperature range. Recommendations regarding the slip resistance test method and the methodology for achieving the required surface conditions in slip resistance connection were drawn.

scholarly journals Experimental study on slip resistance performance of ASTM A1010 stainless steel bolted connections

2021 ◽  
Author(s):  
Omar Cameron
Keyword(s):  
Stainless Steel ◽  
Structural Steel ◽  
Surface Condition ◽  
Test Method ◽  
Effect Of Temperature ◽  
Resistance Testing ◽  
Slip Coefficient ◽  
Steel Material ◽  
Slip Resistance ◽  
Stainless Steel Material

The primary aim of this experimental research was to provide information on the slip coefficient performance of ASTM A1010 stainless steel material and to ascertain if its behaviour is comparable to that of 350W Structural Steel. In accomplishing this task, it was important to examine other parameters associated with slip resistance testing, such as (i) bolt relaxation and (ii) the effect of temperature variation and re-usability of high strength bolts. In the 2014 edition of the Canadian Highway Bridge Design Code, the slip coefficient for clean mill scale and hot dip galvanized surface condition for the 350W structural steel is specified as 0.35, whereas for blasted-clean surface condition is specified as 0.5. Although test results in this research showed lower values for tested structural steel plates, the slip coefficient of A1010 stainless steel material performed better than the 350W structural steel for each surface condition and at the same temperature range. Recommendations regarding the slip resistance test method and the methodology for achieving the required surface conditions in slip resistance connection were drawn.

scholarly journals Efek Biokonversi Pulp Kakao menjadi Bioetanol Sebagai Sumber Energi Alternatif melalui Fermentasi Aspergillus niger dan Saccharomyces cerevisiae dalam Fermentor Wadah Plastik dan Stainless Steel

2021 ◽  
Vol 5 (1) ◽  
pp. 73
Author(s):  
Desi Riana Saputri ◽  
Fenzy Putri Liewenti ◽  
Stanislaus Dimas Indra
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Stainless Steel ◽  
Aspergillus Niger ◽  
Fermentation Process ◽  
Test Method ◽  
Cocoa Beans ◽  
Alcohol Fermentation ◽  
Sensory Test ◽  
Steel Material ◽  
Stainless Steel Material

Cocoa beans from Indonesian farmers are not optimal to utilize dan has low quality because they have not done fermentation processing. The aim of this study was to process cocoa beans through fermentation by using Aspergillus niger and Saccharomyces cerevisiae by developing cocoa-pulp byproduct that can be converted to be alcohol. Fermentation process had done in two type of containers such as plastic and stainless steel material. It was observed to know the presence of olygodinamic effect from stainless steel material. The results showed that cacao pulp can be fermented by using Aspergillus niger and Saccharomyces cerevisiae in sensory test method with hyphae growth and strong aromatic from alcohol observation. Stainless steel material in fermentor tub did not give the oligodynamic effect for Aspergillus niger fungus and Saccharomyces cerevisiae growth. The Fermentation process produced 0.66 mL of alcohol from one kilogram fresh cocoa beans. The maximum bioethanol product is that happened in 4th day fermentation process about 5.30 %.

Application of the First Higher-Order (M21) Mode Rayleigh Wave to the Inspection of Stainless Steel Overlays

1990 ◽  
Vol 112 (3) ◽  
pp. 298-301 ◽  
Author(s):  
D. E. Bray
Keyword(s):  
Stainless Steel ◽  
Point Contact ◽  
Base Material ◽  
Higher Order ◽  
Inspection Method ◽  
High Frequencies ◽  
Steel Material ◽  
Welding Defects ◽  
Stainless Steel Material ◽  
Probe Placement

Efficient inspection of stainless steel overlays appears to present a particularly challenging problem due to the anisotropy that is characteristic of that material. An improved inspection technique may be available, however, when the dissimilar properties of the overlay and the base material are utilized. Higher order mode Rayleigh waves which at high frequencies remain confined to the upper layer of the stainless steel material are demonstrated to be able to detect welding defects in the overlay material in a field some distance away from the probe. With this technique, a larger area may be scanned with each probe placement rather than the point contact probe inspection method that is typically used.

Study of Magnetorheological Brush Finishing (MRBF) for Concave Surface of Conformal Optics

2012 ◽  
Vol 497 ◽  
pp. 170-175
Author(s):  
Yun Zhang ◽  
Jing Feng Zhi ◽  
Yue Wang Yu ◽  
Xu Xing Zhu ◽  
Wei Zuo
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Damage ◽  
Aspheric Surface ◽  
Precision Turning ◽  
Good Surface ◽  
Steel Material ◽  
Stainless Steel Material ◽  
Ultra Precision ◽  
Magnetorheological Polishing

Stainless steel; Aspheric mould; Ultra-precision turning; Magnetorheological polishing The ultra precision turning and the inclined-axis type of magnetorheological polishing were introduced for the small aspheric mould of stainless steel. The method was based on the principle of two kinds of processing methods, and the processing feature of stainless steel material. Firstly, the ultra-precision turning was employed to shape aspheric surface rapidly and obtain a relatively good surface. And then, the inclined-axis type of magnetorheological polishing as the final finishing was used to decrease sub-surface damage to obtain better precision. Several of experiments were carried out, the experimental results show that surface roughness can be achieved for Ra 0.0073μm.

Process Optimization for Welding Stainless Steel Clad Material Based on Orthotropic Bridge Plates

2012 ◽  
Vol 178-181 ◽  
pp. 2066-2069 ◽  
Author(s):  
Ji Fang ◽  
Yong Zhi Li
Keyword(s):  
Stainless Steel ◽  
Railway Bridge ◽  
Welding Quality ◽  
Grass Roots ◽  
Steel Material ◽  
Stainless Steel Material ◽  
Under Construction ◽  
First Time ◽  
Welding Stainless Steel

Clad plates welding of stainless steel welding on interlayer between grass roots and the transition layer is a key technology.Structure and properties of welded joints is very uneven,and there have often welding repair cracks. Clad plates of stainless steel material is used to weld under construction in the Southern link’s railway bridge for the first time at home .However, there occurs welding warpage of the convex parts and roughness appears excessive on the overall clad plates and severe deformation, and the quality of railway bridge is affected seriously. Reasons of the impacting welding quality are analyzed and specific measures to control them are proposed and the construction program is optimized.the efficiency and quality of welding can be improved ,a good foundation for the compound plates welding is layed,it will be contribute to ensure the overall quality of the welding quality of railway bridge especially the use of clad plates.

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