An overview of corrosion and experimental studies on corroded mild steel compression members

Cinitha, A.; Umesha, P. K.; Iyer, Nagesh R.

doi:10.1007/s12205-014-0362-0

Cited by 43 publications

(9 citation statements)

References 7 publications

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“…The surface was however scratched using a rough file to ensure its conductivity. Corrosion is a phenomenon that affects the working properties of any metal (Cinitha et al, 2014). Steel metal was previously used for the metallic bars which housed the droppers but because of its corrosive nature, conductivity was poor.…”

Section: Resultsmentioning

confidence: 99%

Electronic warp-break detection mechanism for manual looms

Afriyie

Howard

Asinyo

et al. 2021

RJTA

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Purpose The purpose of this study is to develop a system that detects warp breakage in manual looms using simple mechanisms combined with electronic circuitry. Design/methodology/approach This study used the universal design methodology model where results from observations and interviews aided in designing the appropriate blueprints for the mechanism. Findings Testing procedures revealed that the conductivity of steel bars coupled with the weight of the droppers affected the efficiency of the mechanism. Additionally, the weight of the drop wires influenced the rising of the warp threads during shedding. Considering this, a plate thickness of 0.06 mm was ideal for the droppers which did not affect warp shedding. Test outcomes at the weaving shed proved the workability of the mechanism for timely or prompt repair of a broken warp by weavers that ensured fabric quality. Originality/value The issue of warp breaks remains a critical problem at weaving on manual looms which influence the quality of fabrics. These looms are used by craftsmen in producing interesting fabrics for the market of which they depend on for their living. Premise on this, a two-way (light + sound) alert system was developed to assist weavers to effectively locate and repair broken yarns. Additionally, weavers with special needs (blind people) would be notified on a warp break for immediate repair from someone. This would limit the unnecessary challenges associated with broken warp yarns during weaving.

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Section: Resultsmentioning

confidence: 99%

Electronic warp-break detection mechanism for manual looms

Afriyie

Howard

Asinyo

et al. 2021

RJTA

View full text Add to dashboard Cite

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“…The ratio of hydrochloric acid used is presented in Table 1. The reason for using the acid as 5% and 10% solutions is that it is the general acidic effect taken under consideration for varying purposes at the literature [1,4,7,9,10].…”

Section: Corrosion Testsmentioning

confidence: 99%

“…The most common effect of corrosion on steel is causing material loss on the surface. This loss causes strength of material to decrease [2][3][4]. Sharifi and Rahgozar [5] examined the corrosion damage on three steel I beams used in petrochemical industry.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrochloric Acid Corrosion and CFRP Coating on the Buckling Behavior of Cylindrical Shells Under External Pressure

2021

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Thin walled cylindrical shells are being widely used as silos, liquid tanks, marine structures, and industrial chemical plants. In such applications, the shells are mostly exposed to liquids. When shells filled with low-pH-liquids, corrosion occurs at the surface. Corroded material loss, causes the thickness of the shells to decrease, and it reduces the buckling capacity of shells. Purpose of this study is to investigate the effects of corrosion on the buckling capacity of thin walled cylindrical shells subjected to uniform external pressure. The model shells were half or full filled with 5% and 10% HCl (Hydrochloric Acid) solutions for corrosion. To tolerate the negative effects of corrosion, the cylinders were coated with varying sizes of carbon fiber reinforced polymer (CFRP) sheets. Total of 12 models with the dimensions of 800x400x0.45 mm was investigated in this research. The perfect non-corroded models were used to compare the behavior of all the models. Results show that corrosion causes a significant decrease on the buckling capacity of thin walled cylindrical shells. Acid ratio, filling rate and surface area coated with CFRP fabrics affects the buckling capacity of cylinders.Coating the cylinders with one layer of CFRP resulted with tolerating the buckling capacity loss.

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“…Also, this further makes it possible for the chloride ions to infiltrate the steel to cause further corrosion. Additionally, the area of the reinforcement reduces as they corrode, with a resulting reduction in their capacity to carry load [15][16][17][18]. Steel corrosion affects structural performance by reducing the effective cross-sectional area of reinforcements, its yield and ultimate strength, elongation rate, bond strength between the steel and concrete, thereby reducing the stiffness and bearing capacity of the structure.…”

Section: Introductionmentioning

confidence: 99%