Influence of Morphology on Fracture Propagation of PMMAe/PC Blend in Tensile Tests at High Strain Rate

2020 ◽  
Vol 394 (1) ◽  
pp. 2000153
Author(s):  
Felipe Pedro da Costa Gomes ◽  
Juciklécia da Silva Reinaldo ◽  
Antônio Henrique Venâncio Rodrigues ◽  
Thatiana Cristina Pereira Macedo ◽  
Bismarck Luiz Silva ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Fracture Propagation ◽  
Tensile Tests

Effects of hydrogen on the mechanical response of X80 pipeline steel subject to high strain rate tensile tests

2019 ◽  
Vol 43 (4) ◽  
pp. 684-697 ◽  
Author(s):  
Yuanyuan Zheng ◽  
Lin Zhang ◽  
Qiaoying Shi ◽  
Chengshuang Zhou ◽  
Jinyang Zheng
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Mechanical Response ◽  
High Strain ◽  
Pipeline Steel ◽  
Tensile Tests ◽  
X80 Pipeline Steel

scholarly journals Assessment of Deformation Field during High Strain Rate Tensile Tests of RAFM Steel Using DIC Technique

2014 ◽  
Vol 86 ◽  
pp. 131-138 ◽  
Author(s):  
S.A. Krishnan ◽  
Ankit Baranwal ◽  
A. Moitra ◽  
G. Sasikala ◽  
S.K. Albert ◽  
...  
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Tensile Tests ◽  
Deformation Field ◽  
Rafm Steel ◽  
Dic Technique

scholarly journals Tensile Tests of Flat Bars at High Strain Rate

2011 ◽  
Vol 15 (3) ◽  
pp. 46-51
Author(s):  
Ivo Dohnal ◽  
Miroslav Šlais ◽  
Milan Forejt ◽  
Radko Smek
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
High Strain ◽  
Tensile Tests

scholarly journals Advanced Use of a Split Hopkinson Bar Setup for the Extended Characterization of Multiphase Steel Sheets

2010 ◽  
Vol 638-642 ◽  
pp. 1065-1070
Author(s):  
Joost Van Slycken ◽  
Patricia Verleysen ◽  
Joris Degrieck
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Elevated Temperatures ◽  
High Strain ◽  
Tensile Tests ◽  
Trip Steels ◽  
Split Hopkinson Tensile Bar ◽  
Steel Sheets ◽  
Split Hopkinson ◽  
Multiphase Steel

In this paper some highlights are presented of an integrated numerical and experimental approach to obtain an in-depth understanding of the high strain rate behavior of materials. This is illustrated by an investigation of the multiphase TRansformation Induced Plasticity (TRIP) steel. ‘Classic’ high strain rate tensile experiments using a split Hopkinson tensile bar setup are complemented with strain rate jump tests, tensile tests at elevated temperatures and interrupted experiments. High strain rate compression and three-point bending experiments are performed on the steel sheets as well. The results reveal the excellent energy-absorption properties in dynamic circumstances of TRIP steels. Advanced experimental setups using the Hopkinson principle provide indeed tools for validation of the material and structural properties of TRIP steels.

High Strain Rate Tensile Testing

2004 ◽  
pp. 251-263
Keyword(s):  
High Strain Rate ◽  
Strain Rate ◽  
Tensile Testing ◽  
High Strain ◽  
Split Hopkinson Pressure Bar ◽  
Tensile Tests ◽  
Ring Test ◽  
Hopkinson Pressure Bar ◽  
Strain Rate Effects ◽  
Pressure Bar

Abstract High strain rate tensile testing is necessary to understand the response of materials to dynamic loading. The behavior of materials under high strain rate tensile loads may differ considerably from that observed in conventional tensile tests. This chapter discusses the processes involved in determining strain rate effects in tension by conventional tensile tests, expanding ring test, flat plate impact tests, split-Hopkinson pressure bar test, and rotating wheel test, along with their applications, advantages, and disadvantages.

scholarly journals Thermomechanical tensile properties of deposited Inconel 718 superalloy over a wide range of strain rate and temperature

2021 ◽  
Vol 250 ◽  
pp. 05017
Author(s):  
Martina Scapin ◽  
Lorenzo Peroni ◽  
Kangbo Yuan ◽  
Weiguo Guo
Keyword(s):  
High Temperature ◽  
High Strain Rate ◽  
Strain Rate ◽  
High Speed ◽  
High Strain ◽  
Heating System ◽  
Tensile Tests ◽  
Significant Drop ◽  
Nominal Strain Rate ◽  
Wide Range

Nickel-based superalloys show high strength retained also at high temperature and they are widespread used for structural components exposed during services to high temperature combined with high strain rate or impact loading conditions. The objective of this study was the investigation of the plastic flow behaviour of Laser Metal Deposited Nickel-based superalloy Inconel718. The material was manufactured at Northwestern Polytechnical University in China. Specimens with three different heat treatment conditions were investigated: as-deposited, directly aged and aged after homogenization and solution. High strain rate tensile tests were performed on the direct Hopkinson bar setup developed at DYNLab laboratory at Politecnico di Torino. At a nominal strain rate of 1500 s-1 the temperature sensitivity was investigated between 20 and 1000°C. An induction heating system was adopted, and the temperature was monitored by thermocouples and infrared pyrometer and high-speed camera. The results showed the materials strength decreases as a function of temperature with a significant drop starting from 800 °C. An asymmetric tension-compression behaviour was found by comparing the results with data in compression. The strain rate influence was investigated at room temperature and very limited or negligible sensitivity was found covering six orders of magnitude in strain rate.

scholarly journals Mechanical characterization of 3D printed concrete subjected to dynamic loading

2021 ◽  
Vol 250 ◽  
pp. 01009
Author(s):  
Rosanna Napolitano ◽  
Costantino Menna ◽  
Daniele Forni ◽  
Domenico Asprone ◽  
Ezio Cadoni
Keyword(s):  
Tensile Strength ◽  
High Strain Rate ◽  
Strain Rate ◽  
Waiting Time ◽  
High Strain ◽  
Waiting Times ◽  
Digital Fabrication ◽  
Tensile Tests ◽  
Experimental Program ◽  
3D Printed

In concrete structures realized by digital fabrication techniques, such as 3D concrete printing, under severe dynamic loadings (e.g. earthquakes and impact loads), the strength at the bond interfaces between layers is weak. Since these contact zones, also referred as cold joint, could potentially compromise the structural stability and also the durability of printed elements, their behaviour under high dynamic loads is fundamental to investigate. An experimental program on 3D printed concrete elements varying the waiting time, through medium and high strain-rate tensile tests is running, with a Hydro-Pneumatic Machine and a modified Hopkinson tensile bar respectively. The results of dynamic tensile tests at three different strain rates (10-5, 50 and 200 s-1) on 3D printed cementitious elements for waiting times of 0min, 10min and 30 min have been presented, in terms of Dynamic increase factors DIF versus strain rate, showing a behaviour highly strain-rate sensitive, recording an increase in tensile strength DIF up to 7.6 in the case of high strain-rate and waiting time of 30 min. The results exhibited a decrease in the dynamic interface tensile strength with the waiting time up to over 90% for a medium strain-rate and over 20% for a high strain-rate.

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