T – Glossary Terms

Tacky or sticky surface:

On plastics and rubbers may indicate severe deterioration of the material, may also be result of previous coatings or adhesives used.


Discolouration of a metal surface due to the formation of thin film of oxide, sulphide or other corrosion product. Used most often to describe the dark corrosion that forms on silver.

Tatami (specifically used for floors in Hirayama studio):

Is a type of mat used as a flooring material in traditional Japanese-style rooms. Traditionally made of rice straw to form the core with a covering of woven soft rush (igusa) straw, tatami are made in standard sizes, with the length exactly twice the width, an aspect ratio of 2:1. Usually, on the long sides, they have edging (heri) of brocade or plain cloth, although some tatami have no edging.


(textiles, skin & leather, plant fibre & barkcloth) – Break in the material caused by force or impact; surrounding material in generally sound condition. Little loss of material, tear edges meet, but may be some fraying.


Separation between or across the fibres of canvas, paper or textile objects, usually beginning at the edge of the object and often following areas of weakness such as folds and initiated by physical damage.


A break in fabric, paper, or other sheet material as a result of tension or torsion.


Tensile Testing:

Strength testing of materials to examine how they may deteriorate.


(of paint)

Transfer print (Ceramics/ Glass):

Decoration applied onto ceramics, by transferring an engraved design from paper.