Influence of Dimensional Parameter of an Impact Test Machine on the Results of a Test

2009 ◽  
pp. 35-35-19 ◽  
Author(s):  
G Revise
Keyword(s):  
Impact Test ◽  
Test Machine ◽  
Dimensional Parameter

scholarly journals Designing and manufacturing of a drop weight impact test machine

2013 ◽  
Vol 1 (2) ◽  
pp. 69-76 ◽  
Author(s):  
F. Taheri-Behrooz ◽  
M.M. Shokrieh ◽  
H.R. Abdolvand
Keyword(s):  
Impact Test ◽  
Test Machine ◽  
Drop Weight ◽  
Weight Impact

Microscopic Investigation on Material Stucture of Broken Additively Manufactured Parts

2015 ◽  
Vol 808 ◽  
pp. 175-180
Author(s):  
Gergely Dezső ◽  
Ferenc Szigeti
Keyword(s):  
Electron Microscope ◽  
Material Properties ◽  
Manufacturing System ◽  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Microscopic Investigation ◽  
Material Structure ◽  
Test Machine ◽  
Structure And Properties

In spite of its complexitiy and difficulties in measuring it, fracture can reveal a high amount of information on material structure and properties. Microstructure of additive manufactured parts is studied in this work. Standard impact test parts were manufactured on OBJET EDEN 350V machine in three different orientation, and they were broken by a Charpy impact test machine. Different surfaces of broken parts were studied with an electron microscope. High variety of structures were observed, and explained by technological aspects of manufacturing system, and material properties. It is shown, that material is surprisingly brittle. Microscopic study pointed out that microstructure is definitely anisotropic.

The development of an instrumented impact test machine

1982 ◽  
Vol 16 (2) ◽  
pp. 287-294 ◽  
Author(s):  
W.F.C. Fisher ◽  
D.A. Hills
Keyword(s):  
Impact Test ◽  
Test Machine ◽  
Instrumented Impact Test

STRUCTURE AND MECHANICAL CHARACTERISTIC OF CATTLE HORNS

2014 ◽  
Vol 14 (06) ◽  
pp. 1440011 ◽  
Author(s):  
YONG-JUN YU ◽  
MENG ZOU ◽  
SHU-CAI XU ◽  
RONG-RONG ZHANG ◽  
HUI-XIA WANG ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mechanical Characteristics ◽  
Impact Test ◽  
Longitudinal Direction ◽  
Mechanical Tests ◽  
Test Machine ◽  
Light Weight ◽  
Laminated Structure ◽  
Pendulum Impact ◽  
Scanning Electron

In order to investigate the structure and mechanical characteristics of cattle horns, the microstructures of the keratin shell and bone core were examined by scanning electron microscopy, and a series of mechanical tests were performed by the tension-compression test machine and pendulum impact test machine. Results showed that the keratin shell was a laminated structure stacked by keratin protein slices, and the bone core was a light-weight porous material with pores randomly distributed in the longitudinal direction. The ultimate tensile strength of the keratin shell diminished gradually from distal to middle to proximal parts with the values of 162, 125 and 85 MPa, respectively. The ultimate compressive strength of keratin shell and bone core in the longitudinal direction was higher than that in the transverse. The moisture could cut down significantly the mechanical characteristics of keratin shell and bone core. The shock toughness of the keratin shell was 4.9 J/cm2, which was 7 times as large as that of the bone core. It can be concluded that cattle horn is a graded biological material with outstanding mechanical characteristics. The moisture, location and direction of the sampling have a significant effect on the mechanical characteristics of cattle horns. Compared with the bone core, the keratin shell has a better crashworthiness performance.

Modelling of Charpy Test Using the FEM Method in LS-DYNA Software

2014 ◽  
Vol 224 ◽  
pp. 244-248
Author(s):  
Michał Stopel ◽  
Michał Burak ◽  
Dariusz Skibicki
Keyword(s):  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Test Machine ◽  
Charpy Test ◽  
Fem Method

The hereby paper presents comparison of numerically modelled Charpy test in LS-Dyna environment with an experiment on accredited Charpy impact test machine. The comparison was applied to dimensions of a strained sample at selected points and energy consumed for the sample fracture and strains during the test.

scholarly journals Impact Testing of Stainless Steel Materials

2005 ◽  
Author(s):  
R. K. Blandford ◽  
D. K. Morton ◽  
T. E. Rahl ◽  
S. D. Snow
Keyword(s):  
Stainless Steel ◽  
Strain Rate ◽  
Impact Test ◽  
Spent Nuclear Fuel ◽  
Impact Testing ◽  
Radioactive Material ◽  
Test Machine ◽  
Strain Rates ◽  
Stress Strain ◽  
The Impact

Stainless steels are used for the construction of numerous spent nuclear fuel or radioactive material containers that may be subjected to high strains and moderate strain rates (10 to 200 per second) during accidental drop events. Mechanical characteristics of these materials under dynamic (impact) loads in the strain rate range of concern are not well documented. The goal of the work presented in this paper was to improve understanding of moderate strain rate phenomena on these materials. Utilizing a drop-weight impact test machine and relatively large test specimens (1/2-inch thick), initial test efforts focused on the tensile behavior of specific stainless steel materials during impact loading. Impact tests of 304L and 316L stainless steel test specimens at two different strain rates, 25 per second (304L and 316L material) and 50 per second (304L material) were performed for comparison to their quasi-static tensile test properties. Elevated strain rate stress-strain curves for the two materials were determined using the impact test machine and a “total impact energy” approach. This approach considered the deformation energy required to strain the specimens at a given strain rate. The material data developed was then utilized in analytical simulations to validate the final elevated stress-strain curves. The procedures used during testing and the results obtained are described in this paper.

Analysis of Vibrational Energy on the Pendulum Based on Finite Element

2016 ◽  
Vol 693 ◽  
pp. 453-457
Author(s):  
Xin Luo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Manufacturing Industry ◽  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Test Machine ◽  
Element Analysis ◽  
Processing Technologies ◽  
The Finite Element Analysis

Charpy impact test is very sensitive to mechanical processing technologies and product defects. Charpy impact test can give quantitative test data and improve the product quality of advanced manufacturing industry and the safety of the application of new materials. The Charpy impact test machine has elastic deformation. The center of percussion is different from the designed center of strike and this difference can affect the vibration energy on the pendulum. In this article, by using the finite element analysis method, we simulate experimental processes having different distance to the center of percussion and obtain the numerical quantity related effects. In the end, we verify the accuracy of the finite element analysis by using different energy level impact test.

scholarly journals The Effect of Treatment of Coconut Fiber with Liquid Smoke on Mechanical Properties of Composite

2021 ◽  
Vol 328 ◽  
pp. 07010
Author(s):  
M Mukhlis ◽  
Witono Hardi ◽  
Rulan Mustafa
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Impact Strength ◽  
Impact Test ◽  
Single Fiber ◽  
Test Machine ◽  
Coconut Fiber ◽  
Liquid Smoke ◽  
Effect Of Treatment ◽  
The Impact

This study aims to determine the effect of liquid smoke treatment on the tensile strength of the single fiber and Coconut fiber (CF) Reinforced Composite. The research method is Immersion the fiber with liquid smoke and heating. First treatment, CF was immersed in liquid smoke for 1, 2, and 3 hours, then dried for 1 hour at a temperature of 40 degrees Celsius. Next, the single fiber tensile test was carried out with the Universal Impact Test Machine and composite impact strength. The results showed that the tensile strength of single fiber TP, P1J, P2J, and P3J of 51.357 MPa, 79.655 MPa, 48.187 MPa, and 58.117 MPa. While the CF composite impact test TP, P1J, P2J, and P3J of 0.514 KJ/m2, 1.385 KJ/m2, 1,085 KJ/m2, and 2,128 KJ/m2. The liquid smoke immersion can increase the tensile strength of single fibers, where 1-hour immersion has the greatest value. In contrast, the impact strength of the CF composites increased at 3 hours, the largest immersion value. The results showed that the fiber soaked in liquid smoke could be an alternative to improve the mechanical properties of CF.

scholarly journals DESIGN OF IMPACT TEST MACHINE TYPE CHARPY OF 50 J

2016 ◽  
Vol 2 (8) ◽  
Author(s):  
CÉSAR A. CHAGOYÉN-MÉNDEZ ◽  
LEANDRO FERNANDES MONTEIRO BARROS ◽  
JORGE L. MOYA-RODRÍGUEZ ◽  
ÁNGEL S. MACHADO-RODRÍGUEZ ◽  
YAMILL S. CAMPOS-PÉREZ
Keyword(s):  
Impact Test ◽  
Test Machine ◽  
Machine Type
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