Authors :
Zuhdi Yahya, Yusdiansyah, Legowo Kamarubayana, Hasanudin
Volume/Issue :
Volume 6 - 2021, Issue 12 - December
Google Scholar :
http://bitly.ws/gu88
Scribd :
https://bit.ly/3FfUSjI
Abstract :
The study aimed to determine the effect of joint
forms on the Ulin (Eusideroxylon zwageri Tet B) wood
spread on its strength. The type of wood used in this study
is the Ulin type (Eusideroxylon zwageri T et B), which is
a beam with a standard market size that is traded 8 cm x
8 cm x 400 cm. The Ulin beam is wrinkled to four sides so
that it gets a uniform size (wide and thick). Beams are
made various forms of connection, namely straight edge
joints, sloping edges and tilted edges related to each
other..
Testing includes the mechanical properties of MoE
and MoR using Panter MPK-5 test equipment in the
laboratory of the physical and wood mechanics properties
of Samarinda State Agricultural Polytechnic. The data
analysis used was a Complete RandomIzed Design with
10 repeats, and further tests using LSD (Least Significant
Difference). Based on the results of the research obtained
it was found that;
The defect-free Ulin wood used in the study had an
average MoE value of 318,846.52 kg/cm2, MoR 1,049.66
kg/cm2 classified as wood with strong grade I, with an
average test water content of 19.57% and a wood density
of 1.00 g/cm3.
The connection in wood results in a decrease in
stiffness (MoE) between 23 - 57.04% of the rigidity (MoE)
of wood without a connection, when the rigidity of wood
without a connection is considered 100%. The form of the
connection, greatly affects the rigidity (MoE) of the wood
connection. From each treatment the shape of the sloping
edge connection and the sloping edge joint produces the
highest rigidity value (MoE).
Keywords :
Ulin Wood, Connection form, MoE and MoR.
The study aimed to determine the effect of joint
forms on the Ulin (Eusideroxylon zwageri Tet B) wood
spread on its strength. The type of wood used in this study
is the Ulin type (Eusideroxylon zwageri T et B), which is
a beam with a standard market size that is traded 8 cm x
8 cm x 400 cm. The Ulin beam is wrinkled to four sides so
that it gets a uniform size (wide and thick). Beams are
made various forms of connection, namely straight edge
joints, sloping edges and tilted edges related to each
other..
Testing includes the mechanical properties of MoE
and MoR using Panter MPK-5 test equipment in the
laboratory of the physical and wood mechanics properties
of Samarinda State Agricultural Polytechnic. The data
analysis used was a Complete RandomIzed Design with
10 repeats, and further tests using LSD (Least Significant
Difference). Based on the results of the research obtained
it was found that;
The defect-free Ulin wood used in the study had an
average MoE value of 318,846.52 kg/cm2, MoR 1,049.66
kg/cm2 classified as wood with strong grade I, with an
average test water content of 19.57% and a wood density
of 1.00 g/cm3.
The connection in wood results in a decrease in
stiffness (MoE) between 23 - 57.04% of the rigidity (MoE)
of wood without a connection, when the rigidity of wood
without a connection is considered 100%. The form of the
connection, greatly affects the rigidity (MoE) of the wood
connection. From each treatment the shape of the sloping
edge connection and the sloping edge joint produces the
highest rigidity value (MoE).
Keywords :
Ulin Wood, Connection form, MoE and MoR.
