Toward in situ testing of the mechanical properties of composite panels

A description is given of the nature of problems caused by ice for the engineer. Factors controlling the deformation behaviour and strength of ice are discussed briefly. A distinction is made between the behaviour of the relatively small volumes of competent ice that are normally used for tests and the large, inhomogeneous bodies that must be considered by the engineer. Consideration is given to the implications of this for the conduct of in situ tests and the interpretation of their results. Key words: ice, mechanical properties, mechanical behaviour, in situ testing, pressuremeter.

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In-situ Testing of Mechanical Properties of Materials

Micro-Manufacturing Engineering and Technology ◽

10.1016/b978-0-8155-1545-6.00021-1 ◽

2010 ◽

pp. 331-343 ◽

Cited By ~ 1

Author(s):

Fredrik Östlund ◽

Karolina Rzepiejewska-Malyska ◽

Laetitia Philippe ◽

Patrick Schwaller ◽

Johann Michler

Keyword(s):

Mechanical Properties ◽

In Situ Testing ◽

Mechanical Properties Of Materials ◽

Properties Of Materials

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Pénétromètre à chute libre: Impact et pénétration dans des argiles reconstituées

Canadian Geotechnical Journal ◽

10.1139/t85-012 ◽

1985 ◽

Vol 22 (1) ◽

pp. 129-135 ◽

Cited By ~ 6

Author(s):

D. Levacher

Keyword(s):

Mechanical Properties ◽

Shear Strength ◽

Key Words ◽

Laboratory Tests ◽

Free Fall ◽

Test Series ◽

Dynamic Resistance ◽

In Situ Testing

The use of a free-fall penetrometer for the determination of the in situ mechanical properties of reconstituted clays is presented. The penetrometer is equipped with an accelerometer for measuring continuously the acceleration or the deceleration. The equipment is relatively simple and the test is fast. The usefulness of such a test is demonstrated, and its adaptation to in situ testing is easy to achieve. Laboratory tests indicate that the shear strength can be directly computed as a function of depth. The penetrometer, as developed, can reach a depth of 0.50 m, but it is possible to achieve greater depths with some modifications. The results presented pertain to a few test series on reconstituted clays, with impact velocities up to 8 m/s. Key words: penetrometer, impact, reconstituted clays, tests, dynamic resistance, cohesion. [Journal translation]

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Some consideration of in-situ testing on mechanical properties of rock mass

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts ◽

10.1016/0148-9062(83)91382-7 ◽

1983 ◽

Vol 20 (3) ◽

pp. A72

Keyword(s):

Mechanical Properties ◽

Rock Mass ◽

In Situ Testing

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Micro-Compression Testing of TSV Copper Pillar: An In Situ Method and Mechanical Property

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.663.352 ◽

2013 ◽

Vol 663 ◽

pp. 352-356 ◽

Cited By ~ 1

Author(s):

Ting Gu ◽

Ping Cheng ◽

Hui Ying Wang ◽

Xu Han Dai ◽

Hong Wang ◽

...

Keyword(s):

Mechanical Properties ◽

Compression Test ◽

Seed Layer ◽

Three Dimensional ◽

Force Sensor ◽

Piezoelectric Motor ◽

In Situ Testing ◽

Deep Reactive Ion Etching ◽

Testing Method

This paper puts forward an in-situ testing method for the mechanical properties of TSV copper pillar by using micro-compression experiment. The sample for micro-compression test is prepared by the processes as follows: (a) etching TSV with deep reactive ion etching (DRIE), (b) sputtering a layer of Ti/Cu as the seed layer, (c) TSV copper plating technology, and (d) corroding the silicon to obtain the final specimen. The micro compression test is done with a micro-compression system, consisting of a three-dimensional adjustable stage, a microscope, a force sensor, and a piezoelectric motor. The experimental results show that the platform can test TSV copper pillar’s stress, the accuracy is reached mN. The yield strength of TSV copper pillar is about 199.89 MPa.

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In-Situ Testing of Operation Stability in Hydraulic Turbine Generator Unit

Earth & Space 2008 ◽

10.1061/40988(323)67 ◽

2008 ◽

Cited By ~ 1

Author(s):

Shanshan Wang ◽

Pizhong Qiao

Keyword(s):

Hydraulic Turbine ◽

In Situ Testing ◽

Turbine Generator ◽

Operation Stability ◽

Generator Unit

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Dynamics of Nanoparticle Chain Aggregates of Carbon Under Tension

MRS Proceedings ◽

10.1557/proc-778-u4.4 ◽

2003 ◽

Vol 778 ◽

Author(s):

Rajdip Bandyopadhyaya ◽

Weizhi Rong ◽

Yong J. Suh ◽

Sheldon K. Friedlander

Keyword(s):

Mechanical Properties ◽

Carbon Black ◽

Polymer Film ◽

Elastic Behavior ◽

Small Strains ◽

Transmission Electron ◽

Chain Aggregates ◽

Nanoparticle Chains ◽

Reinforcing Filler

AbstractCarbon black in the form of nanoparticle chains is used as a reinforcing filler in elastomers. However, the dynamics of the filler particles under tension and their role in the improvement of the mechanical properties of rubber are not well understood. We have studied experimentally the dynamics of isolated nanoparticle chain aggregates (NCAs) of carbon made by laser ablation, and also that of carbon black embedded in a polymer film. In situ studies of stretching and contraction of such chains in the transmission electron microscope (TEM) were conducted under different maximum values of strain. Stretching causes initially folded NCA to reorganize into a straight, taut configuration. Further stretching leads to either plastic deformation and breakage (at 37.4% strain) or to a partial elastic behavior of the chain at small strains (e.g. 2.3% strain). For all cases the chains were very flexible under tension. Similar reorientation and stretching was observed for carbon black chains embedded in a polymer film. Such flexible and elastic nature of NCAs point towards a possible mechanism of reinforcement of rubber by carbon black fillers.

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