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yield model of sheet metals are very important [1-2]. In literatures some experimental methods such as uniaxial tensile test, hydraulic bulge test with round plate, the compression test along......
, quasi-static bulge test in different strain rate ranges, drop hammer rig, and modified SHPB tests are utilized [11-14]. In addition, various HERF processes like electro-magnetic forming (EMF), electro... of the shock wave are well described in Ref. [25]. This advantage can be integrated to perform standard bulge test at different strain rates by replacing the end wall of the shock tube with a sheet material......
]. Many approaches[5-9] such as bend, bulge, resonance, nanoindentation, and tension have been presented for mechanical testing of microspecimens. However, these methods have some limitations. In bending-mode test, it is difficult to apply a large strain on a thin-film of a ductile material and a stress gradient occurs, causing non-uniform stress distribution across cross section. A bulge test can......
is formed and the tool departs from surface A, the metal detained on the tool surface will go on plastic deformation and protrude from groove surface on surface A, and then form the sectional bulge... process of fin structure: (a) Bulge formation; (b) Fin formation and heightening Fig.9 SEM image of fin structure The ploughing-extrusion depth has the greatest influence on the form of the fin......
in all presented studies. Furthermore, little has been reported in the literature on integral forging of cross valves, besides some research on bulge forming of cross-joint[10]. Therefore, a coupled..., HASHMI M S J. Finite element simulation of bulge forming of a cross-joint form a tubular blank [J]. Journal of Materials Processing Technology, 2000, 103: 333-342. [11] FLUHRER J. DEFORMTM 3D......
1 Tool dimensions 2.3 Results and discussion Table 2 presents the measurements of the maximum bulge heights of the parts and illustrates that the height of the hydraulic bulging result... is at the pole of the dome, as shown in Figs. 4(b)-(d), indicating negligible friction in the soft bulging tests. Fig. 4 Components of bulge forming The measurements of the major and minor strains nearest......
. The main measurement methods of the film internal stress are substrate deformation tests, bulge test and X-ray diffraction methods [8-12]. Cantilever beam test is one of the widely used substrate... and stainless steel substrates by peel test [J]. Trans Nonferrous Met Soc China, 2002, 12(1): 93-97. [9] YANG Lin, LONG Shi-guo, MA Zeng-sheng, WANG Zi-han. Accuracy analysis of plane-strain bulge......
to describe the anisotropic yield behavior of aluminum alloy sheets. For the parameter identification, the equi-biaxial tensile yield stress was obtained by the bulge test and the equi-biaxial... tensile tests, simple shear tests and bulge test, while the single biaxial test covered a range of stress state by the heterogeneous deformation field in central zone of cruciform specimen. KIM et al......
were presented. And the wrinkling and bursting defects for bulge and closing stages, and the safe zone for producing the desired part were determined. MIRZAALI et al [16] investigated and optimized... before and after bulge forming were analyzed by the Comsmart AutoGrid grid strain measurement system. And then the distribution of the strain and wall thickness of the work-piece can be obtained. 4......
strength and strain hardening for ultre-thin Cu films with and without passivation: A study by synchrotron and bulge test techniques [J]. Acta Materialia, 2008, 56(10): 2318-2335. [21] FAN Hai-dong, LI...(11-12): 1754-1766. [22] MAHABUNPHACHAI S, KOC M. Investigation of size effects on material behavior of thin sheet metals using hydraulic bulge testing at micro/meso-scales [J]. International Journal......