Glossary of Terminology

 

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

 

A

Abrasion Surface loss of a material due to frictional forces.

Abrasion resistance (1) The resistance of a material to loss of surface particles due to friction. (2) The ability of a rubber compound to resist mechanical wear.

Accelerated aging - A method in which an attempt is made to produce and measure the effects of natural aging in a shorter period.

Acid Resistant - Withstands the action of acids.

Adhesion (1) The state in which two surfaces are held together by interfacial forces which may consist of molecular forces or interlocking action, or both. (2) Basically, the adhering, clinging, bonding or sticking of two material surface to one another, such as rubber to rubber, rubber to glass, rubber to metal, rubber to wood, rubber to fabric, rubber to cord, rubber to wire etc. (3) Refers to the strength of bond between cured rubber surfaces or cured rubber surface and a non-rubber surface.   

Adhesion Failure - The separation of two materials at the surface interface rather than within one of the materials itself.

Aging - (1) The irreversible change of material properties after environ- mental exposure for an interval of time; (2) Exposing materials to an environment for an interval of time. (3) To undergo changes to physical properties with age or lapse of time.

Aging, Air Oven: A means of accelerating the changes in physical properties of rubber compounds by exposing them to the action of air at an elevated temperature.

Air Checks - See Air trap

Air Curing - The vulcanization of a rubber product in air as distinguished from vulcanizing in a press or steam vulcanizer.

Air trap - Surface markings or depressions due to trapping air voids in body or part due to entrapped gas between the materials being cured and the mold or press surface.

Ambient Temperature: (1) The surrounding temperature relative to the given point of application. (2) The environment temperature surrounding the object under consideration.

Apportionment - Referred to here as a part of Reliability Engineering. Synonymous with the term Reliability Apportionment, which is the assignment of reliability goals from system to subsystem in such a way that the whole system will have the required reliability.

Autoclave - A pressure vessel into which materials or articles can be placed and exposed to steam under pressure. It is commonly used for vulcanization.

 

 

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