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ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL TENTANG PEMUAIAN DI SMP KEMALA BHAYANGKARI Anggriani, Teti; Tandililing, Edy; Syukran, Syukran
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 8, No 6 (2019): JUNI 2019
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

  AbstractThe research aims to analyze the kinds of student’s error, to calculate the percentage of student errors and to find the cause of the student's error in resolving the problem of expansion. The form of research is descriptive research. The samples in this research were 41 students in VII grade in SMP Kemala Bhayangkari. The Instrument to Collect data in this research is an essay test  and interview. The analysis data techniques using the Miles and Huberman model. The results of this research were 3.52% of students experienced concept error, 15.04% of students experienced errors in writing symbols, 20.73% of students experienced calculate errors and 33.74% of students experienced unit errors. The cause of the student's error is that students experience misconceptions, forget, inadvertence, difficult to counting on numbers that have multiple numbers behind a comma, do not know how to convert the right unit and unit to the answer. Based on the explanation of student of the causes of student errors in resolving the problem, it is hoped that it will be the base for the teachers and the next researchers to improve student learning outcomes especially in grade VII on the expansion lesson. Keywords: Cause of Error, Descriptive Research, Kinds of error, Percentage of error, Problem of Expansion,   
Teori Budaya dan Pembelajaran Bahasa Arab bagi Masyarakat Aceh Syukran, Syukran
An Nabighoh Jurnal Pendidikan Dan Pembelajaran Bahasa Arab Vol 20 No 02 (2018): Jurnal An Nabighoh
Publisher : Institut Agama Islam Negeri (IAIN) Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (491.474 KB) | DOI: 10.32332/an-nabighoh.v20i02.1276

Abstract

Tulisan ini bertujuan untuk memperoleh pemahaman dan gambaran mendalam tentang teori budaya dan pembelajaran bagi masyarakat Aceh. Budaya dan pembelajaran bahasa Arab di masyarakat Aceh dikatakan baik karena budaya lingkungan dan kegiatan kebahasaan yang ada di masyarakat berjalan sangat baik, hal ini semata-mata di dukung oleh budaya masyarakat aceh itu sendiri. Dimana kita mengetahui, bahwasanya masyarakat Aceh secara umum sangatlah mencintai agama, ini bisa dilihat dari sebutan Aceh (Serambi Mekkah). Oleh karena itu, untuk dapat memahami agama secara kaffah, maka diperlukanlah memperlajari bahasa Arab secara menyeluruh. Penulisan ini secara teoritik berguna untuk pengembangan ilmu pendidikan khususnya Pendidikan Bahasa Arab, sebagai masukan bagi pendidik dan pengajar bahasa Arab di wilayah Aceh umumnya, khususnya Aceh Utara, dan hal ini juga dilakukan untuk dapat mengembangkan pola pembelajaran bahasa Arab dan sebagai acuan bagi pesantren maupun lembaga pendidikan lain yang ingin membekali materi-materi acuan bagi pesantren maupun lembaga pendidikan lain yang ingin membekali materi-materi dan skill kebahasa-Araban masyarakatnya, lembaga pendidikan Islam yang menggunakan metode pembelajaran bahasa Arab yang efektif dapat dijadikan rujukan dan menjadi salah satu penunjang dalam pengajaran bahasa Arab pada masyarakat di Aceh itu sendiri.
Pengaruh interpass temperatur terhadap sifat mekanik proses pengelasan SMAW material carbon steel SS400 Muqsalmina, Muqsalmina; Syukran, Syukran; Hanif, Hanif
Journal of Welding Technology Vol 1, No 1 (2019): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.971 KB) | DOI: 10.30811/jowt.v1i1.1454

Abstract

Welding is the process of joints metals by melting through heating. Interpass temperature can influence the rapid slowing of the cooling rate and also determine the percentage of accicular ferrite formation, the slower cooling rate will form more accicular ferrite. Accicular ferrite is a structure that is expected from every welding process because it has more resilient properties. This study aims to determine the effect of temperature interpas on the mechanical properties of the welding process SMAW SS400 carbon steel material. Welding specimens were given variations in interpas temperature treatment namely 100oC, 150oC, and 200oC. The results showed that interpas temperature variation could affect the tensile strength value of welded material. The voltage value on the 100oC interpas specimen is 38.26 Kgf / mm2. The value of the stress in the 150oC interpas specimen is 39.09 Kgf / mm2. The value of the stress in the 200oC specimen is 37.37 Kgf / mm2. The value of the stress without treatment is 32.21 Kgf / mm2. Keywords: Welding, SS400 Carbon Steel, Tensile Test, Interpass TemperatureAbstrak Pengelasan merupakan proses penyambungan logam dengan cara pencairan melalui pemanasan. Interpass temperatur dapat mempengaruhi cepat lambatnya laju pendinginan dan turut menentukan prosentasi terbentuknya accicular ferrite, laju pendinginan lebih lambat akan terbentuk accicular ferrite yang lebih banyak. Accicular ferrite ini merupakan struktur yang diharapkan dari setiap proses pengelasan karena memiliki properties yang lebih tangguh. Penelitian ini bertujuan untuk mengetahui pengaruh interpas temperatur terhadap sifat mekanik proses pengelasan SMAW material carbon steel SS400. Spesimen pengelasan diberi variasi perlakuan temperatur interpas yakni 100oC, 150oC, dan 200oC. Hasil penelitian menunjukkan bahwa variasi temperatur interpas dapat mempengaruhi nilai kekuatan tarik suatu material hasil lasan. Nilai tegangan pada spesimen interpas 100oC adalah sebesar 38,26 Kgf/mm2. Nilai tegangan pada spesimen interpas 150oC adalah sebesar 39,09 Kgf/mm2. Nilai tegangan pada spesimen 200oC adalah sebesar 37,37 Kgf/mm2.Nilai tegangan tanpa perlakuan adalah sebesar 32,21 Kgf/mm2.Kata Kunci : Pengelasan, Carbon Steel SS400, Uji Tarik, Temperatur Interpass
Pengaruh variasi sudut kampuh bevel groove terhadap kekuatan tarik material Stainless Steel 304 Fata, Husnul; Razi, Muhammad; Syukran, Syukran
Journal of Welding Technology Vol 2, No 1 (2020): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v2i1.1128

Abstract

Gas Tungsten Arc Welding (GTAW) adalah suatu proses pengelasan dengan menggunakan gas mulia sebagai pelindung. Untuk menghasilkan busur listrik, digunakan elektroda yang tidak terkonsumsi terbuat dari logam tungsten atau paduannya yang memiliki titik lebur tinggi. Baja tahan karat austenite 304 atau yang sering disebut stainless steel 304 merupakan baja paduan dengan kandungan Cr 18-20%, dan Ni 8-10,5%. Baja jenis ini biasa digunakan sebagai bahan kontruksi utama dalam beberapa industri seperti nuklir, kimia, dan makanan. Baja ini memiliki ketahanan terhadap korosi yang baik karena terdapat lapisan kromium oksida pada permukaannya. SS304 merupakan baja yang memiliki tingkat kekerasan rendah sekitar 123 HB dan kekuatan tarik sebesar 505 N/mm². Penelitian ini bertujuan untuk mengetahui kekuatan tarik hasil pengelasan GTAW pada baja tahan karat SS304 dengan variasi sudut kampuh bevel. Dari pengujian yang telah dilakukan, diketahui bahwa kekuatan tarik tertinggi terdapat pada material tanpa penyambungan dengan nilai rata- rata kekuatan tarik 63.84 kgf/mm², sedangkan pada material yang dilas kekuatan tertinggi terdapat pada kampuh bevel dengan sudut 40° dengan nilai rata- rata 55.30 kgf/mm°, sedangkan kekuatan tarik terendah terdapat pada kampuh bevel dengan sudut 35° dengan rata- rata kekuatan tarik 50.68 kgf/mm².Kata kunci :  Pengelasan GTAW, stainless steel 304, kekuatan tarik, elektroda EWTH-2, kampuh. Effect of groove variations on the tensile strength of the material Stainless Steel 304 AbstractGas Tungsten Arc Welding (GTAW) is a welding process using argon gas as a shield. To produce electric arcs, non-consumed electrodes made of tungsten metal or alloys that have a high melting point. Stainless steel 304 is an alloy steel with 18-20% Cr content, and Ni 8-10.5%. This type of steel is commonly used as the main construction material in several industries such as nuclear, chemical, and food. This steel has good corrosion resistance because there is a layer of chromium oxide on its surface. SS304 is a steel that has a low hardness level of about 123 HB and tensile strength of 505 N / mm². This study aims to determine the tensile strength of GTAW welding results in SS304 stainless steel with a variation of the groove angle. From the tests that have been carried out, it is known that the highest tensile strength is in the material without connection with an average tensile strength value of 63.84 kgf / mm², while in the material welded the highest strength is in the bevel groove with an angle of 40 ° with an average value of 55.30 kgf / mm °, while the lowest tensile strength is in the bevel groove with an angle of 35 ° with an average tensile strength of 50.68 kgf / mm². 
REMEDIASI MISKONSEPSI RANGKAIAN LISTRIK SEARAH SISWA SMP MENGGUNAKAN RELATING, EXPERIENCING, APPLYING, COOPERATING, TRANSFERRING (REACT) Japari, M Thoha; Tandililing, Edy; Syukran, Syukran
Jurnal Pendidikan dan Pembelajaran Khatulistiwa Vol 8, No 3 (2019): Maret 2019
Publisher : Jurnal Pendidikan dan Pembelajaran Khatulistiwa

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Abstract

AbstractThis study aimed to measure the effect of Relating, Experiencing, Applying, Cooperating, and Transfering (REACT) model to remediate student’s misconceptions on the Direct-current Electrical Circuit topic at junior high school 10 Pontianak. The sample of this study were 39 students class IX A selected based on intact groups. The instrument consisted 6 multiple choice questions with open reasons for each pretest and posttest. Remediation activities were carried out twice, for the Direct-current Electrical Circuit topic, assisted by the LKPD and PhET simulations. From the results of study shows that the percentage of student’s who have misconceptions decreased. Average percentage reduction of students who have misconceptions using the REACT model at Pontianak 10 State Junior High School is 51%, and effectiveness of  the REACT model in the medium category with value 0.351. Based on the results of this study indicated that the REACT learning model was effective to remediate students' misconceptions on the Direct-current Electrical Circuit topic at class IX of Pontianak 10 State Junior High School. Keywords: Direct-current  Electrical Circuit, Misconception, Relating Experiencing Applying Cooperating and Transfering (REACT) Model, Remediation.
Effect of variation of TIG welding current on tensile strength and hardness of aluminium A-6061 Azwinur, Azwinur; Syukran, Syukran
Journal of Welding Technology Vol 3, No 1 (2021): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v3i1.2226

Abstract

Aluminium is a material that is now widely used for welding because this material has good mechanical properties, is corrosion resistant, is light in weight and can be recycled. The problem that occurs in aluminium welding is the presence of a passive layer or layer of Al2O3 oxide which has a high affinity for oxygen. This oxide layer is also an insulator which can inhibit the flow of current in welding. The amount of current in the welding process greatly affects the amount of heat input, weld concentration and arc stress. The purpose of this study was to determine changes in the mechanical properties of tensile strength and hardness of welded metal joints with variations in welding current on aluminium Al-6061 using the TIG welding process. The stages of the research method carried out were to carry out the TIG welding process on aluminium material joints with variations in currents of 120A, 140A and 160A. The filler rods used were AWS A5.10/ER-5356 and argon gas with a flow volume of 15 l/m. Furthermore, the results of the weld are tested for tensile and hardness to determine changes in the mechanical properties of the weld joint. The results show that the magnitude of the welding current affects the strength of the welding joint in terms of mechanical properties, especially the value of the tensile strength and hardness of the material when receiving loads and also affects the strain or elongation of a material. The highest tensile strength value is at a current strength of 160A of 9.83 Kgf/mm2, while the lowest tensile strength value is welding using a current strength of 120A with a value of 9.73 Kgf/mm2. The most ductile or ductile welded joints are welding using a current of 120A. While the highest hardness value was in the 160A weld metal area of 95.17 HRE and the lowest was in the HAZ area of 160A current of 41.17 HRE