The Design of Fatigue Test Machine and the Analysis of Fatigue Behavior of FSWed Dissimilar Aluminum Alloys

Yürük, Ali; Çevik, Bekir; Kahraman, Nizamettin

doi:10.1007/s40799-022-00564-7

Cited by 2 publications

(2 citation statements)

References 37 publications

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“…Similarly, resistance spot welding of AA5754 H111 and AA6013 materials was studied [20]. It was reported that temperature compensation in AA5754 was slower than in AA6013 due to lower thermal conductivity [14]. Porosity and inclusion were observed with different size on the macrostructures of welded joints, Figures 5-7 layer (approximately 2050 °C) is nearly three times higher than that of aluminum melting temperature (approximately 660 °C).…”

Section: Optical Microscope Investigationsmentioning

confidence: 99%

Mechanical properties and corrosion behavior of similar/dissimilar resistance spot welded automotive aluminum alloys

Kaya,

Başer,

Kahraman

2023

Materialwissenschaft Werkst

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Recently, usage of high strength aluminum alloys in automotive applications increase. The reasons for that increase are the light‐weight, high strength, good formability, weldability and corrosion resistance of the aluminum alloys to improve fuel economy as well as decreasing carbon dioxide emission. Automotive hybrid structures are commonly manufactured using dissimilar AA5000‐AA6000 joints to improve mechanical requirements and corrosion resistance of the parts. In this study, AA5754 H111‐AA6063 T4 materials were joined both similarly and dissimilarly by resistance spot welding method. Within the study, a mid‐frequency direct current technology was used instead of conventional alternative current technology. The welded zone was investigated by micro hardness measurements and microstructural characterization. Tensile‐shear and cross‐tension tests were performed. The welded zone of all welded specimens was subjected to salt spray corrosion test. A nugget pull‐out fracture mode was observed on the fracture surface of the all welded joints after tensile‐shear and cross‐tension tests. The lowest hardness values were measured from the weld metals for all welded joints. Porosity and inclusion were observed in the weld nugget with minor cracks in heat affected zone by optical microscope investigations.

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Section: Optical Microscope Investigationsmentioning

confidence: 99%

Mechanical properties and corrosion behavior of similar/dissimilar resistance spot welded automotive aluminum alloys

Kaya,

Başer,

Kahraman

2023

Materialwissenschaft Werkst

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“…Yürük et al designed and built a computer-based fatigue testing machine to perform 10 Hz fatigue tests on dissimilar aluminum alloys (AA5754/AA6013) welded using friction stir welding. It provides insights for future research on the welding results of dissimilar aluminum alloys and dynamic loading of welded joints [14]. ISAKOV et al designed a 48 Hz large-scale fatigue tester based on the rotating beam method to reduce the errors arising from the use of data from small specimens to infer the fatigue performance of large components, which can test high-strength specimens with a gauge diameter of 32 mm and a gauge length of 100 mm [15].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Control Characteristics of the Electro-Hydraulic Vibration System Based on the Single-Neuron Control Algorithm

Jia,

Chen,

Chen

et al. 2024

Machines

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This paper proposes an electro-hydraulic vibration control system based on the single-neuron PID algorithm, which improves the operating frequency of the electro-hydraulic fatigue testing machine and the control accuracy of the load force. Through mathematical modeling of the electro-hydraulic vibration system (EVS), a MATLAB/Simulink simulation, and experimental testing, this study systematically analyzes the output waveform of the EVS as well as the closed-loop situation of load force amplitude and offset under the action of the single-neuron PID algorithm. The results show that: the EVS with a 2D vibration valve as the core, which can control the movement of the spool in the two-degrees-of-freedom direction, can realize the output of an approximate sinusoidal load force waveform from 0 to 800 Hz. The system controlled by the single-neuron PID algorithm is less complex to operate than the traditional PID algorithm. It also has a short rise time for the output load force amplitude curve and a maximum control error of only 1.2%. Furthermore, it exhibits a rapid closed-loop response to the load force offset. The range variability of the load force is measured to be 1.43%. A new scheme for the design of EVS is provided in this study, which broadens the application range of electro-hydraulic fatigue testing machines.

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The Design of Fatigue Test Machine and the Analysis of Fatigue Behavior of FSWed Dissimilar Aluminum Alloys

Cited by 2 publications

References 37 publications

Mechanical properties and corrosion behavior of similar/dissimilar resistance spot welded automotive aluminum alloys

Mechanical properties and corrosion behavior of similar/dissimilar resistance spot welded automotive aluminum alloys

Analysis of the Control Characteristics of the Electro-Hydraulic Vibration System Based on the Single-Neuron Control Algorithm

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