The Nature of the Mechanical Bond

Topics covered include: Supramolecular, covalent, and statistical approaches to the formation of entanglements that underpin mechanical bonds in molecules and macromolecules Kinetically and thermodynamically controlled strategies for ...

The Nature of the Mechanical Bond

Author: Carson J. Bruns

Publisher: John Wiley & Sons

ISBN: 1119044006

Page: 786

View: 853

An introduction to the mechanical bond -- The fundamentals of making mechanical bonds -- Making mechanical bonds under thermodynamic control -- Molecular topologies and architectures with mechanical bonds -- The stereochemistry of the mechanical bond -- Molecular switches and machines with mechanical bonds

NASA technical note

It appears that the bonding between the gallium film is mechanical in nature and
that , because of the low strength of this type of bond , gallium cannot be retained
on a smooth tungsten surface in a sliding condition . Since the bonding is ...

NASA technical note

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Mechanical Design of Structural Materials in Animals

hydrogen bonds in these helices contributes to the energy required to extend the
silks in their postyield extensions to failure. The GPGXX motifs function in a
similar manner, but they do not involve the formation of stable helical structures.

Mechanical Design of Structural Materials in Animals

Author: John M. Gosline

Publisher: Princeton University Press

ISBN: 0691176876

Page: 400

View: 686

Mechanical Design of Structural Materials in Animals explores the principles underlying how molecules interact to produce the functional attributes of biological materials: their strength and stiffness, ability to absorb and store energy, and ability to resist the fatigue that accrues through a lifetime of physical insults. These attributes play a central role in determining the size and shape of animals, the ways in which they can move, and how they interact with their environment. By showing how structural materials have been designed by evolution, John Gosline sheds important light on how animals work. Gosline elucidates the pertinent theories for how molecules are arranged into macromolecular structures and how those structures are then built up into whole organisms. In particular, Gosline develops the theory of discontinuous, fiber-reinforced composites, which he employs in a grand synthesis to explain the properties of everything from the body wall of sea anemones to spiders' silks and insect cuticles, tendons, ligaments, and bones. Although the theories are examined in depth, Gosline's elegant discussion makes them accessible to anyone with an interest in the mechanics of life. Focusing on the materials from which animals are constructed, this book answers fundamental questions about mechanical properties in nature.

Materials Science and Technology Structure and Properties of Composites

It follows that both shear and transverse tensile strength of the interface will be
significant factors . Bonding may be mechanical , physical and / or chemical in
nature . Mechanical bonding arises from physical asperities on the fiber surface ...

Materials Science and Technology  Structure and Properties of Composites

Author: Robert W. Cahn

Publisher: Wiley-VCH

ISBN: 9783527268269

Page: 641

View: 295

This handbook provides an in-depth overview of the structure and properties of composite materials. Contents: Parvizi-Majidi: Fibers and Whiskers. Newaz, Chawla, Olagnon/Fantozzi: Polymer-, Ceramic- and Metal-Matrix Materials. Mai/Kim: Interfaces. Bussi/Ishida: Morphology Control. Eduljee/ McCullough: Elastic Properties. Sun: Inelastic Properties. Bader/ Hill: Short Fiber Composites. Carlsson: Fracture in Composites. Talreja: Fatigue in Composites.

Journal of Clinical Orthodontics

Interface is formed between the bonding medium and the enamel surface . The
nature of the bond is a mechanical interlocking of the projections of the bonding
medium into the subsurface of enamel . Interface Il is created between the
bracket ...

Journal of Clinical Orthodontics

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Mechanical Sciences

It may be assumed that , if investigations of the silicone bond were conducted in
the range of small loads ( from 0 . 01 to 0 . 50 kgf ) , then a dependence of the
peaks of the masses 2 , 15 , 16 might possibly be observed which has the nature
of ...

Mechanical Sciences

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Fundamentals of Packaging Technology

THEORIES OF ADHESION There are a number of theories as to why one
substance bonds to another . Suffice it to say that all the theories relate to the
nature and chemistry of the bonding surfaces . Mechanical Adhesion Theory
Mechanical ...

Fundamentals of Packaging Technology

Author: W. Soroka

Publisher: Inst of Packaging Professionals

ISBN:

Page: 589

View: 490

Mechanical Sciences Mashinovedenie

It may be assumed that , if investigations of the silicone bond were conducted in
the range of small loads ( from 0.01 to 0. 50 kgf ) , then a dependence of the
peaks of the masses 2 , 15 , 16 might possibly be observed which has the nature
of ...

Mechanical Sciences   Mashinovedenie

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Medical and Dental Materials

The fiber / matrix bond enables reinforcement and provides structural support
and a load transfer mechanism . This bond may be either mechanical or chemical
in nature . Chemical bonds are either interatomic ( covalent ) or intermolecular ...

Medical and Dental Materials

Author: David Franklyn Williams

Publisher: John Wiley & Sons Incorporated

ISBN: 9780895738011

Page: 469

View: 855

New Scientist

Scandium is a transition element in group IIIA and its metallic crystalline structure
is determined by the bonding between ... This quantum mechanical bond energy
depends on the nature of the orbitals that the valence electrons occupy, as the ...

New Scientist

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Materials Performance

Discussion The Nature of the Bonding by APS The bonding of arc plasma
spraying is predominantly mechanical in nature . It was found that a thin layer of
arc plasma sprayed coating could not bond tightly with a steel plate surface
polished by ...

Materials Performance

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Mechanical World and Engineering Record

ly increasing are of an elastic nature . The other clearance space is present
behind each will increase , increasing the load on main type of bond is the
silicate bond , “ cutting " abrasive particle the wheel its holder and , ideally ,
causing it to ...

Mechanical World and Engineering Record

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