Impact bending behaviors of parallel bamboo strand lumber beams: Velocity sensitivity and anisotropy

2021 ◽  
Vol 263 ◽  
pp. 113711
Author(s):  
Zhenyu Qiu ◽  
Jingxuan Wang ◽  
Hualin Fan
Keyword(s):  
Velocity Sensitivity ◽  
Impact Bending

Research of the cold resistance of metals by indentation with registration of an acoustic emission signal

2020 ◽  
pp. 61-64
Author(s):  
Yu.G. Kabaldin ◽  
A.A. Khlybov ◽  
M.S. Anosov ◽  
D.A. Shatagin
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Acoustic Emission ◽  
Acoustic Emission Signal ◽  
Low Temperatures ◽  
Cold Resistance ◽  
Emission Signal ◽  
Impact Bending ◽  
Artificial Neural

The study of metals in impact bending and indentation is considered. A bench is developed for assessing the character of failure on the example of 45 steel at low temperatures using the classification of acoustic emission signal pulses and a trained artificial neural network. The results of fractographic studies of samples on impact bending correlate well with the results of pulse recognition in the acoustic emission signal. Keywords acoustic emission, classification, artificial neural network, low temperature, character of failure, hardness. [email protected]

New Research on the Use of Hardening Plastics for Aircraft Construction

1940 ◽  
Vol 44 (349) ◽  
pp. 44-73
Author(s):  
Wilhelm Kuech
Keyword(s):  
Strength Properties ◽  
Dynamic Loads ◽  
Absorbed Energy ◽  
Good Strength ◽  
Different Temperatures ◽  
Bonding Properties ◽  
Static And Dynamic Loads ◽  
Impact Bending ◽  
New Research ◽  
Laminated Materials

Laminated materials incorporating plastics seem to be especially well suited lor highly stressed aircraft components, by reason of their good strength properties. Paper, fabric and wood veneers treated with plastics on a phenolic basis were tested with regard to their strength, especially in bending, shear, absorbed energy in impact bending, notching strength and in their resistance against moisture. Further, the behaviour of compressed plastics was studied at different temperatures under static and dynamic loads. A part of the research was extended to pure phenol resin and to thermoplastics based on methacrylate and polyvinylchloride. The bonding properties of laminated compressed plastics were established. Concluding, some experiments relating to the practical manufacture of aeroplane components are communicated.

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

Velocity sensitivity of reverse‐time migration

2008 ◽  
Author(s):  
Guojian Shan ◽  
Lin Zhang ◽  
Yue Wang ◽  
Tamas Nemeth ◽  
Wei Liu
Keyword(s):  
Reverse Time ◽  
Reverse Time Migration ◽  
Time Migration ◽  
Velocity Sensitivity

scholarly journals Impact Bending Strength and Brinell Hardness of Densified Hardwoods

BioResources ◽  
2016 ◽  
Vol 11 (4) ◽  
Author(s):  
Miroslav Gašparík ◽  
Milan Gaff ◽  
Lenka Šafaříková ◽  
Carlos Rodriguez Vallejo ◽  
Tomáš Svoboda
Keyword(s):  
Bending Strength ◽  
Brinell Hardness ◽  
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.

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