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Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

Relation between Poisson's ratio, Modulus of Elasticity and Modulus of Rigidity

Deformation occurs in axial and transverse directions when an axial load is applied to a slender bar. This deformation impacts the cubic element within the bar, transforming it into either a rectangular parallelepiped or a rhombus, contingent on its orientation. This transformation process induces shearing strain. Axial loading elicits both shearing and normal strains. Applying an axial load instigates equal normal and shearing stresses on elements oriented at a 45° angle to the load axis.

Bulk Modulus

Bulk Modulus

The bulk modulus is a scientific term used to describe a material's resistance to uniform compression. It is the proportionality constant that links a change in pressure to the resulting relative volume change.

Fineness Modulus

Fineness Modulus

The fineness modulus (FM) of aggregate is a numerical index that measures the coarseness or fineness of the particles. It is calculated by adding the cumulative percentages of aggregate retained on each of a specified series of sieves and dividing the sum by 100.
Consider performing sieve analysis on sand through a set of ASTM sieves. The weight of aggregate retained in each sieve and pan placed at the bottom is recorded, as given in Column B of Table 1.
To determine the fineness modulus of...

Strain and Elastic Modulus

Strain and Elastic Modulus

The quantity that describes the deformation of a body under stress is known as strain. Strain is given as a fractional change in either length, volume, or geometry under tensile, volume (also known as bulk), or shear stress, respectively, and is a dimensionless quantity. The strain experienced by a body under tensile or compressive stress is called tensile or compressive strain, respectively. In contrast, the strain experienced under bulk stress and shear stress is known as volume and shear...

Dynamic Modulus of Elasticity of Concrete

Dynamic Modulus of Elasticity of Concrete

The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by a...

Vertical Curve: Problem Solving

Vertical Curve: Problem Solving

Vertical curves provide the transition between two roadway grades, ensuring safety, comfort, and functionality. Calculating elevations at specific stations along the curve involves several systematic steps based on the curve's geometry and provided design parameters.The vertical curve is defined by its length, grades, Point of Vertical Intersection (P.V.I.) location, and P.V.I. elevation. The stations of the Point of Vertical Curvature (P.V.C.), where the curve begins, and the Point of Vertical...

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関連する実験動画

Updated: Jan 28, 2026

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

超安定伸縮性多層電子システムのための垂直ソフトインターコネクトを備えたモジュラスエンジニアリング基板

Wenbo Zhao^1,2, Yifan Deng¹, Binlong Deng³

¹Institute of Flexible Electronics, Northwestern Polytechnical University, Xi'an, China.

Advanced materials (Deerfield Beach, Fla.)

|January 27, 2026

まとめ

この要約は機械生成です。

伸縮性多層エレクトロニクスは、インターフェイスの不一致を克服し、ウェアラブルデバイスとソフトロボットを強化します。この新しい設計は、800％のひずみと4000サイクルを達成し、高度な電子皮膚と触覚システムを可能にします。

キーワード:

モジュラスエンジニアリング基板安定性伸縮性伸縮性多層電子システム垂直インターコネクト

さらに関連する動画

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

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Syringe-injectable Mesh Electronics for Stable Chronic Rodent Electrophysiology

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Last Updated: Jan 28, 2026

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology

Published on: December 7, 2015

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

A Fabrication Method for Highly Stretchable Conductors with Silver Nanowires

Published on: January 21, 2016

Syringe-injectable Mesh Electronics for Stable Chronic Rodent Electrophysiology

Syringe-injectable Mesh Electronics for Stable Chronic Rodent Electrophysiology

Published on: July 21, 2018

科学分野:

材料科学
機械工学
電気工学

背景:

伸縮性多層電子システムは、高度なウェアラブルエレクトロニクス、ソフトロボット、ヒューマンマシンインターフェイスに不可欠です。
コンポーネント間の界面の機械的および電気的な不一致は、現在のシステムの伸縮性と安定性を制限します。

研究の目的:

高い伸縮性と安定性のために界面の不一致を克服する伸縮性多層電子システム設計を開発すること。
電子皮膚や触覚システムなどの実用的なアプリケーションでのシステムのパフォーマンスを実証すること。

主な方法:

モジュラスエンジニアリング基板と垂直ソフトインターコネクトを組み合わせました。
モジュラスの不一致を減らし、界面接着を改善するために、同種ソフトブリッジとリジッドアイランド設計を利用しました。
ポアソン効果を軽減し、安定した接続を確保するために、生/ハイブリッド液体金属ベースの垂直インターコネクトを採用しました。

主要な成果:

ひずみ800％の高い伸縮性限界を達成しました。
100％ひずみで4000サイクル以上の高い安定性を示しました。
伸縮性と安定性において、以前に報告された多層フレキシブル電子デバイスを上回りました。

結論:

開発された多層電子システム設計は、伸縮性と安定性において大幅な改善を提供します。
このシステムは、ソフトロボット用の電子皮膚や、ワイヤレスバッテリー統合型インテリジェント触覚システムなどのアプリケーションで有望です。