The use of the ultrasound measurement technique for the evaluation of mechanical properties of the ASTM A36 steels

Fonseca, Eduardo; Reguly, Afonso

doi:10.1590/s1678-58782011000200013

Cited by 4 publications

(3 citation statements)

References 10 publications

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“…It is known that the pulse velocity in steel bars decreases by a certain value if considered a concrete-steel medium. The pulse velocity of steel in a concrete medium with a bar diameter of D is given by the previous study [21],…”

Section: Theorymentioning

confidence: 99%

Effect of Using Steel Bar Reinforcement on Concrete Quality by Ultrasonic Pulse Velocity Measurements

2022

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Non-destructive tests (NDTs) represent one of the solutions that aid engineers in evaluating the strength of materials. However, the results obtained using such tests are still questionable as they may be affected by different factors. One of these factors is the presence of steel reinforcement in concrete. An experimental investigation is presented in this study to investigate the effect of the single reinforcement steel bar on ultrasonic pulse velocity (UPV). Seven concrete beams, one containing no steel and the other six beams containing varying bar diameter and cover thicknesses, were tested. UPV measurements were obtained using the indirect method and then modified to eliminate the effect of the steel bar. To provide the scientific evidence to give a reliable and reasonable solution, a statistical analysis was also conducted. The results show that a large bar diameter and a small cover thickness significantly influence the measured UPV. Measured UPV with a spacing between transducers up to 500 mm can effectively be used to predict the compressive strength of concrete after the modification of the initial UPV.

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Section: Theorymentioning

confidence: 99%

Effect of Using Steel Bar Reinforcement on Concrete Quality by Ultrasonic Pulse Velocity Measurements

2022

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“…Como mostrado por Tekaslan et al [7] e Fonseca e Reguly [8] é necessário padronizar os processos para obter produtos de qualidade. O efeito da espessura da chapa de aço, dos parâmetros de velocidade e o ângulo de matriz de dobra, serão discutidos nesta seção.…”

Section: Ensaio Do Processo De Dobramentounclassified

Análise do retorno elástico do aço ASTM A36 em processos de dobra em V em diferentes velocidades e raios de ferramental

Nunes¹,

Heine²

2022

Tecnol. Metal. Mater. Min.

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Este é um artigo publicado em acesso aberto (Open Access) sob a licença Creative Commons Attribution, que permite uso, distribuição e reprodução em qualquer meio, sem restrições desde que o trabalho original seja corretamente citado. a ResumoO processo de conformação de chapas metálicas, o qual envolve a deformação plástica dos aços, é amplamente empregado na fabricação de uma variedade de peças na construção metal mecânica. Nesse processo, existem alguns fatores que devem ser considerados e analisados, podendo citar como exemplo o retorno elástico do aço. A ocorrência desse fator específico, pode ocasionar divergências dimensionais, impossibilitando o processo seguinte e, consequentemente, a perda ou retrabalho do material, acarretando aumento de custos. Ao longo dos anos, a indústria metal mecânica tem se motivado a buscar novos estudos nessa área, a fim de aprimorar os processos de conformabilidade de dobramento das peças na tentativa de prever o retorno elástico causado no processo. O objetivo do estudo é investigar a ocorrência do retorno elástico no aço ASTM A36 durante o processo de conformabilidade de chapas. Os aços utilizados neste estudo possuem uma espessura de 4,75 mm e 6,35 mm, e foram deformados no processo de dobramento no formato em V realizado em diferentes matrizes e velocidades de dobramento. Com os resultados obtidos nesse estudo, foi possível mostrar: quanto maior a velocidade do processo de dobramento, maior é a variação do retorno elástico. Palavras-chave: Retorno elástico, ensaio de dobramento, aço ASTM A36.

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“…Moreover, since the operation of this product is similar to jack (scissor jack), the material used to this product with the jack design could be also similar or the same. The optimization due to cost and durability of the design of scissor jack is by using mild and hot-rolled ASTM A36 Steel [9] [10]. It has excellent welding properties and is suitable for grinding, punching, tapping, drilling, and machining processes [11] [12].…”

Section: Materials Selectionmentioning

confidence: 99%

Lifting Kit for Flooded Furnitures: Mechanical Design and Strength Analysis

Dzulkifly

Frandito

Ramadhani

et al. 2021

JMEM

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<p>Almost every year, floods disaster becomes the scourge of many countries in the world, including Indonesia. When the flood comes and submerges the houses, every item and household furniture in it will also be submerged in flood water. Furniture that is heavy and difficult to move, especially electronic equipment such as refrigerators, may be left by the owner when a flood occurs. To prevent the furniture from submerging, a lifting kit is needed. For this reason, the purpose of this work is to design a mechanical tool/kit that can lift or elevate the electronic furniture such as refrigerator to a higher position and avoid the damage caused by flood. The kit is expected to be able to cover a 100 x 80 cm base of the refrigerator with maximum load of 200 kg. The elevation of the lifting kit is set to be higher than 50 cm. Calculation for the stress and fatigue analysis is also performed to determine the strength of the structure. As a result, the obtained safety factors for the critical components under static and fatigue loading conditions show values of more than one, indicating the product is safe for real operation. In addition, the required torque to produce the elevation is also calculated and discussed.</p>

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The use of the ultrasound measurement technique for the evaluation of mechanical properties of the ASTM A36 steels

Cited by 4 publications

References 10 publications

Effect of Using Steel Bar Reinforcement on Concrete Quality by Ultrasonic Pulse Velocity Measurements

Effect of Using Steel Bar Reinforcement on Concrete Quality by Ultrasonic Pulse Velocity Measurements

Análise do retorno elástico do aço ASTM A36 em processos de dobra em V em diferentes velocidades e raios de ferramental

Lifting Kit for Flooded Furnitures: Mechanical Design and Strength Analysis

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