| Popis: |
Bolt is a cylinder shaft or tube with a helical groove on its surface, with its primary use is as a fastener to resist two or more sharing object. One important benefit associated with building and bridge structural design, in particular the structure made from timber material, used for a mechanical connector. One of the mechanical properties parameters used in connection design is the yield bending strength (Fyb). In the United States NDS 2012 Code has been available equations to predict Fyb, while in the Indonesian (RSNI 201x) Draft Code is not yet available equations to determine value of Fyb. In this paper presented results of the bolt yield bending strength parameter obtained from experimental studies, especially for bolt that is available at Indonesian market. Bolt diameter that discussed on this paper is limited for 8 mm, 10 mm, and 12 mm. Specimens were used as much as 16 specimens. Methods of testing using ASTM F1575 guidance by three point loading method. Results indicated that value of yield bending strength (average) will be smaller if the bolt diameter is greater, which are for bolt 8 mm is 1121.40 MPa with C.O.V is 4.23 %, for bolt 10 mm is 642.19 MPa (C.O.V 4.80 %), and for bolt 12 mm is 631.76 MPa (C.O.V 1.24 %). Generally, stress-strain relationship curve obtained from bending test showed as a bilinear shape trend. |
