Politeknosains http://jurnal.politama.ac.id/index.php/jp <p>Jurnal Teknik Politeknik Pratama Mulia</p> Politeknik Pratama Mulia Surakarta en-US Politeknosains 1829-6181 <p><strong><span style="text-decoration: underline;">Authors who publish with this journal agree to the following terms:</span></strong></p> <ul> <li style="text-align: justify;">Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.</li> <li style="text-align: justify;">Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.</li> <li style="text-align: justify;">Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).</li> </ul> TM PEMODELAN DESAIN BUS DENGAN MENGGUNAKAN SOFTWARE AUTOCAD TERINTEGRASI DENGAN SOFTWARE COREL DRAW 2010 http://jurnal.politama.ac.id/index.php/jp/article/view/136 <p>Every hears of design word, wich rush in someone think is a beautiful labour and interesting. A girl imagines of the clotches model with design can make her self to appear interesting. While, a motors lover immagines of the motor with sporty modification. With thus, design found of analyse above is the end result from bunch procces some one creative. Exactly, creatifitas is something can’t appear with alone, but must pass exercises. Keyword : design bus, autocad,coreldraw 2010.</p> Ahmad Haryono Warsito Warsito ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2018-01-18 2018-01-18 Juni 83 92 TM PENGARUH FILLER PLAT DAN VARIASI TEBAL PLAT PADA SPOT WELDING ANTARA BAJA-ALLUMUNIUM TERHADAP BEBAN GESER http://jurnal.politama.ac.id/index.php/jp/article/view/135 <p>This study analyzed the treatment results of low carbon steel plate splicing with Alumuium 6061. The material in the form of a dial plate, plate thickness of each plate 1 mm to 2 mm for steel and aluminum plate. Grafting using point welding (spot welding). Filler using steel alloy-All 10 mm diameter with a thickness variation of each filler - 1mm and 2 mm respectively. Grafting with the welding point, specimen 1 using 2.67 V output voltage and welding time of 2.5 seconds, while the second specimen using the output voltage of 2.67 V and the welding time of 5 seconds. Welding results indicate that the specimen 1 can be continued, while the second specimen failed. Then do a test specimen 1 in the shear load and testing of Metallography. From the test slide in prices get broken sliding 1.56 KN. Metallographic testing is at the weld (weld metal), and HAZ regions. From the results of metallographic testing in getting the metal filler can not be binding (no ties) with the parent metal of steel, while the filler metal can bind to (happen bond) with the parent metal allumunium. different melting points far adrift between two base metals are in connection thus causing the quality of the connection did not work properly.</p> Siswanto Siswanto Ardi Widaytmoko Teguh Wiyono ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2018-01-18 2018-01-18 Juni 76 82 TM KEKUATAN TARIK DAN BENDING KOMPOSIT SERAT LIMBAH KAIN TEKTIL (SINGSIN) DENGAN MENGGUNAKAN PEREKAT RESIN POLYESTER http://jurnal.politama.ac.id/index.php/jp/article/view/134 <p>Waste fiber textile fabric on Spinning machinery of production in textile mills and fabric makers striated SMEs can cause environmental problems if not handled properly. In general, the fibers are disposed as garbage or burned so that it can pollute the environment. Yet the researchers from various parts of the world at this point has focused its attention on the utilization of natural fibers and natural fiber composite materials berpenguat which is an environmentally friendly composite materials Because of the specific strengths of several types of natural fibers have a value that can be matched to the value of glass fiber strength, thus allowing the use of natural fibers as a substitute of glass fiber material that has some drawbacks in terms of the environment on the use of glass fiber composite materials engineering can lead to skin irritation at the time processing and also in terms of health can lead to respiratory problems caused by the suctioning of fiber glass dust. Other intensive driving spur development of natural fiber composites are environmental directives And regulations</p> Teguh Wiyono Kuncoro Diharjo ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2018-01-18 2018-01-18 Juni 68 75 JS ANALISIS IMPLEMENTASI PROGRAM AKREDITASI PENDIDIKAN NON FORMAL DI SURAKART http://jurnal.politama.ac.id/index.php/jp/article/view/132 <p>Siti Achaliyah, S 24090811, 2011. An analysis of the Implementation of BAN PNF Acreditation Program in improving the education quality on informal education institution in Surakarta. Thesis :Post graduate Program University of Sebelas Maret Surakarta. The research background is to improve the education quality on informal education institution, it is very important to apply the acreditation program from BAN PNF. It is meant to give guaranty about the worthiness of program in PNF institution itself. Moreover the position, role and function of eduation institution whether formal or informal is the same, as the institution that serve public’s need in education, as mentioned in UU RI no 20/2003 section1, verse 1. This research is done to understand the implementation of acreditation program of BAN PNF towards the informal education instution in Surakarta and the barrier in implementing this program as well. This research uses the theory of George C.Edward III that suggest to concern about four main issues, so that the wisdom implementation will be efective, namely communication, resource, disposition or attitude and bureucratic structures. It is a descriptive research with qualitative approach. The source of primary data was done by purposive sampling technique. The obtained data by interview, observation and documentation study. Data validity was done by triangular source and methode. The analysis data technique by analysis interactive data technique. The factors that influence the success in implementing program are communication, resource, disposition or attitude, and bureucratic structures. Among these factors, the barrier take place on the lack of communication of the related subjects in implementing program as well as the human resource limitation, whether in secretarical part or the doer in the field. </p> Siti Achaliyah ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2018-01-18 2018-01-18 Juni 56 67 PENGHEMATAN ENERGI PADA MOTOR INDUKSI 3 FASA NEMA-D MELALUI PERUBAHAN FREKUENSI http://jurnal.politama.ac.id/index.php/jp/article/view/254 <p>NEMA-D induction motor is an induction motor with high slip that<br>has a high starting torque and low starting currents, this study simulates<br>the characteristics of model induction motor NEMA-D by changing the<br>operating frequency and calculate the input power with the change in<br>operating frequency at rated load 20% and 50% for energy savings. The<br>results show the smaller increase in the frequency of work resulted in a<br>maximum torque while the motor speed is decreased to a decrease in the<br>frequency of 80, 70, 60, 50Hz there is an increase of 162 Nm of torque,<br>186, 217, 260 Nm. Expenses 20% by changing the frequency of 80, 70,<br>60, 50Hz at 460V input voltage decrease of input power are 112684,<br>99684, 86684 , 73684 W, and load of 50% decline in the power of 21670<br>W, 205790 W, 184210 and 162500 W, by changing the working frequency<br>will be obtained on the induction motor to load energy savings of 20%<br>and 50% gained energy savings and reduction in velocity, respectively<br>34.6% and 33.4%.<br>Keyword: frequency variable, three-phase induction motors, NEMA D,<br>energy saving, characteristics</p> Yaya Finayani Muhammad Alhan ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 2011-04-08 2011-04-08 Juni 9 16