ojs2 has produced an error Message: WARNING: fopen(/home/jurnal/files/usageStats/usageEventLogs/usage_events_20260113.log): failed to open stream: Permission denied In file: /home/jurnal/ojs245/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 309 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: flock() expects parameter 1 to be resource, boolean given In file: /home/jurnal/ojs245/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 310 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: assert(): Assertion failed In file: /home/jurnal/ojs245/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 315 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: fclose() expects parameter 1 to be resource, boolean given In file: /home/jurnal/ojs245/plugins/generic/usageStats/UsageStatsPlugin.inc.php At line: 317 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: unlink(/home/jurnal/ojs245/cache/fc-pluginSettings-5-right block.php): Permission denied In file: /home/jurnal/ojs245/lib/pkp/classes/cache/FileCache.inc.php At line: 57 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: fopen(/home/jurnal/ojs245/cache/fc-pluginSettings-5-right block.php): failed to open stream: Permission denied In file: /home/jurnal/ojs245/lib/pkp/classes/cache/FileCache.inc.php At line: 86 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: unlink(/home/jurnal/ojs245/cache/fc-pluginSettings-5-index.php): Permission denied In file: /home/jurnal/ojs245/lib/pkp/classes/cache/FileCache.inc.php At line: 57 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
ojs2 has produced an error Message: WARNING: fopen(/home/jurnal/ojs245/cache/fc-pluginSettings-5-index.php): failed to open stream: Permission denied In file: /home/jurnal/ojs245/lib/pkp/classes/cache/FileCache.inc.php At line: 86 Stacktrace: Server info: OS: Linux PHP Version: 5.3.10-1ubuntu3.26 Apache Version: Apache/2.2.22 (Ubuntu) DB Driver: mysql DB server version: 5.5.64-MariaDB-1ubuntu0.14.04.1
Pengaruh Perlakuan Alkali Serat Terhadap Sifat Mekanik Komposit Uprs-Cantula | Raharjo | Mekanika

Pengaruh Perlakuan Alkali Serat Terhadap Sifat Mekanik Komposit Uprs-Cantula

Wijang Wisnu Raharjo, Dody Ariawan, Zaki Mubarak

Abstract


Abstract : The purpose of this research is to investigate the effect of alkaly treatment on the mechanical properties of  cantula fibers-reinforced unsaturated polyester composite. The mechanical properties were focused on the composites tensile strength and bending strength.  The tensile strengths were characterized by Gotech Testing Machine and bending strengths was analyzed with Torsee Universal Testing Machine. As the result, the highest tensile strength (157,76 MPa) and bending strength (180,20 MPa) were reached at 2 %  NaOH alkaly treatment.

Keywords : alkaly treatment, cantula fiber, unsaturated polyester,mechanical properties.

Full Text:

PDF

Refbacks

  • There are currently no refbacks.


Mekanika: Majalah Ilmiah Mekanika

ISSN: 1412-7962 || eISSN: 2579-3144

Address :  Jl. Ir Sutami no 36 A, Building I, Faculty of Engineering, Universitas Sebelas Maret, Surakarta.

Phone    :  +62271632163 

email     : mesin@ft.uns.ac.id

 

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License