Experimental study of brass properties through perforation tests using a thermal chamber for elevated temperatures

In this paper, experimental and numerical results of an aluminum alloy’s mechanical behavior are discussed. Over a wide range of strain rates (10−4 s−1 ≤ έ ≤ 103 s−1) the influence of the loading impact, velocity and temperature on the dynamic response of the material was analyzed. The interface friction effect on the material’s dynamic response is examined using a split Hopkinson pressure bar (SHPB) in a high temperature experiment using finite element analysis (FEA). The effect of different friction conditions between the specimen and the transmitted/incident bars in the SHPB system was examined using cylinder bulk specimens and cylinder plates defined with four-layer configurations. The results of these tests alongside the presented numerical simulations allow a better understanding of the phenomenon and reduces (minimizes) errors during compression tests at high and low strain rates with temperatures ranging from 21 to 300 °C.

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“…A SHPB must be utilized to define the strain rate sensitivity for strain rates greater than 5000

[ 40 , 41 ] ( Figure 2 ).…”

Section: Description Of the Specimen And Hopkinson Bar Device Usinmentioning

confidence: 99%

Dynamic Behavior of Aluminum Alloy Aw 5005 Undergoing Interfacial Friction and Specimen Configuration in Split Hopkinson Pressure Bar System at High Strain Rates and Temperatures

et al. 2020

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“…The new experimental results of unidirectional tests of tension and compression, allowing to estimate the material constants and to ensure accurate FE simulations, are presented in this chapter. They are complimentary to a number of dynamic perforation tests previously conducted at high impact velocity [ 9 ] in order to understand the thermo-mechanical behaviour of brass and to evaluate its mechanical properties.…”

Section: Experimental Approachesmentioning

confidence: 99%

“…Thus, running dynamic experiments with the use of a thermal chamber is a solution to avoid these limitations. Such experiments were carried out using brass and are widely discussed in [ 9 ]. Brass alloy was selected for this work since this material presents no or small strain rate sensitivity [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Brass under Impact and Perforation Tests for a Wide Range of Temperatures: Experimental and Numerical Approach

et al. 2020

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The originally performed perforation experiments were extended by compression and tensile dynamic tests reported in this work in order to fully characterize the material tested. Then a numerical model was presented to carry out numerical simulations. The tested material was the common brass alloy. The aim of this numerical study was to observe the behavior of the sample material and to define failure modes under dynamic conditions of impact loading in comparison with the experimental findings. The specimens were rectangular plates perforated within a large range of initial impact velocities V0 from 40 to 120 m/s and in different initial temperatures T0. The temperature range for experiments was T0 = 293 K to 533 K, whereas the numerical analysis covered a wider range of temperatures reaching 923 K. The thermoelasto-viscoplastic behavior of brass alloy was described using the Johnson–Cook constitutive relation. The ductile damage initiation criterion was used with plastic equivalent strain. Both experimental and numerical studies allowed to conclude that the ballistic properties of the structure and the ballistic strength of the sheet plates change with the initial temperature. The results in terms of the ballistic curve VR (residual velocity) versus V0 (initial velocity) showed the temperature effect on the residual kinetic energy and thus on the energy absorbed by the plate. Concerning the failure pattern, the number of petals N was varied depending on the initial impact velocity V0 and initial temperature T0. Preliminary results with regard to temperature increase were recorded. They were obtained using an infrared high-speed camera and were subsequently compared with numerical results.

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“…Also, with a specially designed drop weight tower, the low velocity impact behavior of AA 2024-T3 aluminum and TRIP 1000 steel at − 60 °C was investigated by Rodríguez-Martínez et al [25,26]. As for studies concerning impact behavior of materials under subordnance or ordnance velocity at different temperatures, high temperature perforation by several authors were found [27][28][29][30]. Rusinek et al [27] developed a heating chamber coupled to the ballistic impact device to investigate perforation behavior of poly(methyl methacrylate) (PMMA).…”

Section: Introductionmentioning

confidence: 99%

“…Rusinek et al [27] developed a heating chamber coupled to the ballistic impact device to investigate perforation behavior of poly(methyl methacrylate) (PMMA). With the thermal chamber, Klosak et al [30] studied perforation behavior of brass alloy plates under temperatures ranging from 20 to 260 °C. Results showed that the energy absorption capacity decreased with increasing temperature.…”

Section: Introductionmentioning

confidence: 99%

Perforation Behavior of 304 Stainless Steel Plates at Various Temperatures

Jia

Rusinek

Bahi

et al. 2019

J. dynamic behavior mater.

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The effect of temperature on perforation behavior of 304 austenitic stainless steel plates was investigated experimentally. Perforation tests have been conducted at velocities from 80 to 180 m/s and temperatures between − 163 and 200 °C. Low temperatures were obtained using a specific designed cooling device and the temperature distribution on the specimens was verified to be uniform. Based on the experimental results, the failure mode, the initial-residual velocity curves, the ballistic limit velocities and the energy absorption capacity under different temperatures were analyzed. It was found that petalling was the main failure mode during the perforation process. The average number of petals was three at 20 °C or 200 °C and was increasing continuously to five at − 163 °C. The ballistic limit velocity V bl was also affected by the initial temperature. It increased slightly from 93 m/s at 200 °C to 103 m/s at − 20 °C and then remained constant at lower temperatures. The material showed better energy absorption capacity at low temperatures and this came not only from the temperature sensitivity of the material but also from the strain-induced martensitic transformation effect. According to martensite measurement by X-ray diffraction technique, the martensite fractions along the fracture surface of petals were 87.1%, 66.2%, 52.8% and 32.4% respectively for initial temperatures of − 163 °C, − 60 °C, − 20 °C and 20 °C.

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Experimental study of brass properties through perforation tests using a thermal chamber for elevated temperatures

Cited by 11 publications

References 16 publications

Dynamic Behavior of Aluminum Alloy Aw 5005 Undergoing Interfacial Friction and Specimen Configuration in Split Hopkinson Pressure Bar System at High Strain Rates and Temperatures

Dynamic Behavior of Aluminum Alloy Aw 5005 Undergoing Interfacial Friction and Specimen Configuration in Split Hopkinson Pressure Bar System at High Strain Rates and Temperatures

Mechanical Properties of Brass under Impact and Perforation Tests for a Wide Range of Temperatures: Experimental and Numerical Approach

Perforation Behavior of 304 Stainless Steel Plates at Various Temperatures

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