Evaluation of rainfall erosivity and impact forces using strain gauges

2016 ◽  
Vol 17 (4) ◽  
pp. 207-217 ◽  
Author(s):  
K. Vilayvong ◽  
N. Yasufuku ◽  
R. Ishikura
Keyword(s):  
Strain Gauges ◽  
Rainfall Erosivity ◽  
Impact Forces

scholarly journals Design Considerations to Improve Charpy Instrumented Strikers

2020 ◽  
Vol 125 ◽  
Author(s):  
Nicholas Vlajic ◽  
Ako Chijioke ◽  
Enrico Lucon
Keyword(s):  
Linear Response ◽  
Dynamic Fracture Toughness ◽  
Impact Testing ◽  
Strain Gauges ◽  
Design Considerations ◽  
Impact Location ◽  
Impact Forces ◽  
Present Design ◽  
Good Repeatability ◽  
Bridge Circuits

Instrumented impact testing allows the applicability of conventional Charpy tests to be extended toward assessing mechanical properties such as dynamic fracture toughness and dynamic tensile properties. In this work, we present design considerations for engineering instrumented strikers for Charpy V-notch impact testing. Specific attention is given to the mechanical and geometric features, as well as the placement of strain gauges and corresponding bridge circuits for instrumentation. These design considerations are intended to make the sensitivity invariant to the location and distribution of impact forces. The concepts presented in this work were applied to an actual instrumented striker, which was then statically calibrated. Data from this calibration indicate that the device has good repeatability, shows a linear response, and is relatively insensitive to impact location.

ASSESSMENT OF SOIL EROSION USING FOURNIER INDEXES TO ESTIMATE RAINFALL EROSIVITY

2019 ◽  
Vol 18 (8) ◽  
pp. 1739-1745 ◽  
Author(s):  
Gabriel Lazar ◽  
Alina Maria Coman ◽  
Georgiana Lacatusu ◽  
Ana Maria Macsim
Keyword(s):  
Soil Erosion ◽  
Rainfall Erosivity

The Distribution of Breaking and Non-Breaking Wave Impact Forces

2009 ◽  
Author(s):  
Anne M. Fullerton ◽  
Ann Marie Powers ◽  
Don C. Walker ◽  
Susan Brewton
Keyword(s):  
Breaking Wave ◽  
Wave Impact ◽  
Impact Forces

Mapping monthly rainfall erosivity for the Lazio Region (Italy)

2020 ◽  
Author(s):  
C. Mineo ◽  
E. Ridolfi ◽  
B. Moccia ◽  
F. Napolitano
Keyword(s):  
Monthly Rainfall ◽  
Rainfall Erosivity ◽  
Lazio Region

Use of a dentin bonding agent for the fixation of strain gauges on bone

2021 ◽  
pp. 104545
Author(s):  
Tanja Grobecker-Karl ◽  
Kamran Orujov ◽  
Virgilia Klär ◽  
Matthias Karl
Keyword(s):  
Bonding Agent ◽  
Strain Gauges ◽  
Dentin Bonding ◽  
Dentin Bonding Agent

Cold expansion of rail-end-bolt holes: finite element predictions and experimental validation by DIC and strain gauges

2021 ◽  
pp. 106275
Author(s):  
Giovanni Pio Pucillo ◽  
Alessandro Carrabs ◽  
Stefano Cuomo ◽  
Adam Elliott ◽  
Michele Meo
Keyword(s):  
Finite Element ◽  
Experimental Validation ◽  
Strain Gauges ◽  
Cold Expansion ◽  
Bolt Holes

scholarly journals Experimental and FE investigations on the influential parameters in positioning and measurement of strain gauges in adhesively bonded single lap joints

2020 ◽  
Vol 28 ◽  
pp. 1590-1600
Author(s):  
M.Z. Sadeghi ◽  
J. Weiland ◽  
J. Zimmermann ◽  
A. Schiebahn ◽  
U. Reisgen ◽  
...  
Keyword(s):  
Lap Joints ◽  
Strain Gauges ◽  
Adhesively Bonded ◽  
Single Lap Joints ◽  
Influential Parameters

scholarly journals Giant gauge factor of Van der Waals material based strain sensors

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Wenjie Yan ◽  
Huei-Ru Fuh ◽  
Yanhui Lv ◽  
Ke-Qiu Chen ◽  
Tsung-Yin Tsai ◽  
...  
Keyword(s):  
Carrier Mobility ◽  
Large Range ◽  
Van Der Waals ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Strain Gauges ◽  
Gauge Factor ◽  
Proof Of Concept ◽  
High Flexibility ◽  
Small Deformations

AbstractThere is an emergent demand for high-flexibility, high-sensitivity and low-power strain gauges capable of sensing small deformations and vibrations in extreme conditions. Enhancing the gauge factor remains one of the greatest challenges for strain sensors. This is typically limited to below 300 and set when the sensor is fabricated. We report a strategy to tune and enhance the gauge factor of strain sensors based on Van der Waals materials by tuning the carrier mobility and concentration through an interplay of piezoelectric and photoelectric effects. For a SnS2 sensor we report a gauge factor up to 3933, and the ability to tune it over a large range, from 23 to 3933. Results from SnS2, GaSe, GeSe, monolayer WSe2, and monolayer MoSe2 sensors suggest that this is a universal phenomenon for Van der Waals semiconductors. We also provide proof of concept demonstrations by detecting vibrations caused by sound and capturing body movements.

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