scholarly journals ON THE INTRODUCTION OF A NEW METHOD OF METAL PIPES IMPACT BENDING TEST

2021 ◽  
pp. 83
Author(s):  
D.A. Neganov ◽  
A.E. Zorin
Keyword(s):  
New Method ◽  
Bending Test ◽  
Metal Pipes ◽  
Impact Bending

Proportional limit of wood obtained from a load-time diagram during an impact bending test

2002 ◽  
Vol 48 (6) ◽  
pp. 527-531
Author(s):  
Yoshitaka Kubojima ◽  
Hideo Kato ◽  
Mario Tonosaki
Keyword(s):  
Bending Test ◽  
Time Diagram ◽  
Proportional Limit ◽  
Impact Bending

scholarly journals The Spread of Corrosion in Cast Iron and its Effect on the Life Cycle of Transportation Vehicles

2017 ◽  
Vol 65 (2) ◽  
pp. 383-389 ◽  
Author(s):  
Tomáš Binar ◽  
Jiří Švarc ◽  
Petr Dostál ◽  
Michal Šustr ◽  
Jan Tippner
Keyword(s):  
Impact Strength ◽  
Fractographic Analysis ◽  
Bending Test ◽  
Material Surface ◽  
Bending Tests ◽  
Corrosion Tests ◽  
Fracture Surfaces ◽  
Impact Bending ◽  
Notch Impact Strength ◽  
The Impact

This article deals with the spread of corrosion in material at different exposure times, and its effect on the measured brittle fracture and notch impact strength under different temperature conditions. To assess the degradational effect of corrosion on the material characteristics represented by the measured impact strength, we conducted a fractographic analysis of fracture surfaces, the aim of which was to evaluate the spread of corrosion in the material. In the first part of the experiment, two corrosion tests are simulated with a duration time of 432 and 648 hours, to compare the degradation effect of corrosion on the notch impact strength, depending on the duration of the corrosion tests. The following part shows the results of the impact bending test, where the experiment was conducted in an area of reduced and increased temperatures. The final part summarizes the results of the fractographic analysis of sample fracture surfaces from the impact bending tests. Based on the measured the length of the corrosion cracks, we analyzed the sample at the notch and from the material surface after the impact bending test.

scholarly journals Pipe-concrete columns of buildings and their fire-resistance determination

2018 ◽  
Vol 196 ◽  
pp. 02011
Author(s):  
Nikolay Ilyin ◽  
Nadezhda Kondratyeva ◽  
Vasily Zaiko
Keyword(s):  
Fire Resistance ◽  
Field Tests ◽  
Concrete Columns ◽  
New Method ◽  
Statistical Quality Control ◽  
Resistance Level ◽  
Natural Fire ◽  
Method Of Calculation ◽  
Standard Fire ◽  
Metal Pipes

The research recognizes the necessity of developing a new method of calculation of pipe-concrete columns fire-resistance. It is important for expending the area of their application in construction of buildings and structures; in unique structures as well. The authors apply a simplified mathematical description of the process of pipe-concrete columns resistance to the standard fire effect. This method helps to increase the accuracy of fire resistance level determination to expand these constructions use. If buildings materials are rationally combined, it is possible to produce reliable and sufficiently fireproof structures. Pipe-concrete columns which are, in fact, metal pipes filled with concrete can serve as an example of such structures. Nowadays, field tests are used to determine pipe-concrete constructions fire resistance. The authors introduce a methodology of theoretical determination of pipe-concrete columns fire resistance limit. The use of the proposed methodology makes it possible to reduce labor and economic costs while determining buildings resistance with the use of the pipe-concrete. It opens a possibility of pipe-concrete structures reasonable application in construction practice. The use of this new method allows us to determine pipe-concrete columns fire resistance without resorting to natural fire. It also increases the accuracy of statistical quality control and non-destructive tests. The calculations made in this study as well as previous tests conducted by other researches prove that there is no need for additional fire protection of pipe-concrete columns.

On the Estimation of Dynamic Stress-Strain Curve By Impact Bending Test

2004 ◽  
Vol 2004.1 (0) ◽  
pp. 195-196
Author(s):  
Akihiro HOJO ◽  
Akiyosi CHATANI ◽  
Hiroshi TACHIYA
Keyword(s):  
Dynamic Stress ◽  
Strain Curve ◽  
Bending Test ◽  
Stress Strain Curve ◽  
Stress Strain ◽  
Impact Bending

Impact Resistance of SM Joints Formed With ICA

2002 ◽  
Vol 124 (4) ◽  
pp. 374-378 ◽  
Author(s):  
C. M. Lawrence Wu ◽  
Robert K. Y. Li ◽  
N. H. Yeung
Keyword(s):  
Impact Damage ◽  
Impact Resistance ◽  
High Energy ◽  
Bending Test ◽  
Conductive Adhesives ◽  
Energy Impact ◽  
Split Hopkinson ◽  
Post Impact ◽  
Impact Bending ◽  
The Impact

Isotropic conductive adhesives (ICA) have been considered as replacement materials for lead-tin solder alloys. In this paper, the post-impact shear strength of ICA surface mount (SM) joints was obtained experimentally and compared with that of SM lead-tin joints. The dynamic impact energy was provided in the form of three-point bending on the PCB using equipment called the split Hopkinson bar. Strain rates of over 4000/s were used for the impact bending test. The action of impact bending was used to simulate the effect on the PCB and the interconnection as a result of high energy impact on an electronic equipment. Shear test was then performed to examine the change in strength of the ICA joints as a result of impact damage. It was found that the SM ICA joints failed due to impact at a strain rate just over 4000/s. Microstructural examination carried out using a scanning electron microscope revealed that the interface between the ICA and copper pad on the PCB was the weakest region of the joint.

scholarly journals Research on the notched impact bending test

1957 ◽  
Vol 6 (42) ◽  
pp. 168-171
Author(s):  
Taketo YOKOYAMA ◽  
Fumio HASHIMOTO
Keyword(s):  
Bending Test ◽  
Impact Bending

scholarly journals Biological Resistance of Elm (Ulmus carpinifolia var. Umbelifera) Trees against Fungal Endophytes and White Rot Decay Fungi

2020 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Huijun Dong ◽  
Mina Raiesi ◽  
Mohsen Bahmani ◽  
Ali Jafari ◽  
Hamed Aghajani
Keyword(s):  
Abiotic Factors ◽  
Fungal Endophytes ◽  
Wood Properties ◽  
Urban Trees ◽  
White Rot ◽  
Bending Test ◽  
Decay Fungi ◽  
Impact Bending ◽  
Decay Tests ◽  
The Impact

Urban trees are one of the valuable storage in metropolitan areas. Nowadays, a particular attention is paid to the trees and spends million dollars per year to their maintenance. Trees are often subjected to abiotic factors, such as fungi, bacteria, and insects, which lead to decline mechanical strength and wood properties. The objective of this study was to determine the potential degradation of Elm tree wood by Phellinus pomaceus fungi, and Biscogniauxia mediteranae endophyte. Biological decay tests were done according to EN 113 standard and impact bending test in accordance with ASTM-D256-04 standard. The results indicated that with longer incubation time, weight loss increased for both sapwood and heartwood. Fungal deterioration leads to changes in the impact bending. In order to manage street trees, knowing tree characteristics is very important and should be regularly monitored and evaluated in order to identify defects in the trees.

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