Transcript
COMPRESSION TEST ON ANISOTROPIC COMPRESSION TEST ON ANISOTROPIC MATERIALMATERIAL
( TIMBER – TEAK WOOD )( TIMBER – TEAK WOOD )
A A PRESENTATION PRESENTATION ON ON
WHAT IS COMPRESSION?WHAT IS COMPRESSION?
External force (stress) that tends to crush External force (stress) that tends to crush a material, squeezing its particles closer and a material, squeezing its particles closer and shortening the dimension in the direction of shortening the dimension in the direction of its action.its action.
OBJECTIVE OF TESTOBJECTIVE OF TEST
To determine the compressive strength of To determine the compressive strength of
the timber specimen and to study its the timber specimen and to study its
behaviour when subjected to load up to its behaviour when subjected to load up to its
fracture.fracture.
ABOUTABOUT MATERIALMATERIAL
Material Type : Material Type : Teak WoodTeak Wood
Teak is a close grained hardwood. This makes it possible to Teak is a close grained hardwood. This makes it possible to cut joints very accurately.cut joints very accurately.
It is one of the hardest, strongest and most durable of all It is one of the hardest, strongest and most durable of all natural woods.natural woods.
This natural wood is strong enough to take the weight of This natural wood is strong enough to take the weight of adults and children - if constructed correctly. It is very strong adults and children - if constructed correctly. It is very strong making it suitable for furniture.making it suitable for furniture.
MostMost expensive sometimes.expensive sometimes.
ABOUTABOUT EQUIPMENTEQUIPMENT ! !
a.a. Universal TestingUniversal Testingb.b. Machine ( UTM )Machine ( UTM )c.c. d.d. Capacity : 100 Tons. Capacity : 100 Tons.
UTMUTM
SPECIMENSPECIMEN SIZE SIZE
SPECIMENSPECIMEN SIZE SIZE
Compression load applied parallel to grains.Compression load applied parallel to grains.
MODEMODE OFOF FAILUREFAILURE
SPLITTINGSPLITTING
Compression load applied perpendicular to Compression load applied perpendicular to grains.grains.
MODEMODE OFOF FAILUREFAILURE
CRACKING ALONG FIBRECRACKING ALONG FIBRE
TESTTEST RESULTSRESULTS
LOAD CASE
LOAD APPLIED PARALEEL TO GRAIN
LOAD APPLIED PERPENDICULAR TO
GRAIN
LOAD AT FAILURE (N) 159 X 103 61 X 103
ULTMATE SRENGTH (N/mm2) 63.6 12.2
The compressive strength of timber (teak wood) parallel The compressive strength of timber (teak wood) parallel
to grain (to grain (63.6 63.6 N/mmN/mm22) is almost greater than ) is almost greater than five timesfive times to that of to that of
perpendicular to grain (perpendicular to grain (12.2 12.2 N/mmN/mm22).).
Teak wood can be effectively used as column.Teak wood can be effectively used as column.
CONCLUSIONCONCLUSION
THANK YOUTHANK YOU
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