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Nusyirwan Nusyirwan
Teknik Mesin Politeknik Negeri Padang
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Study of Improved Crack Toughness of Unsaturated Polymers with Rice Husk Fiber and Sago Flour as Strengthening Materials Nusyirwan, Nusyirwan; Hizhar, Yul; Malik, Adam
Jurnal Polimesin Vol 21, No 5 (2023): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i5.3375

Abstract

The development of environmentally friendly composites from natural fibers is an absolute thing to do to replace non-degradable synthetic composites. Some of the weaknesses of natural fiber composites are low mechanical strength, ease of cracking, no moisture resistance, and high-temperature resistance. One of the things that has been done is to make a combination of synthetic materials as a matrix derived from unsaturated polyester reinforced with natural fibers from crushed rice husk particles and starch from sago flour which is used to reduce the percentage of synthetic materials to be able to form composites that are easily decomposed. From the research, it was found that the strength of crack resistance could be increased with a mixture of polyester reinforced with rice husk fiber and sago flour, obtaining an increase in crack resistance strength until the addition of rice husk with a percentage of 15%. While increasing the RH content above 15%, the crack strength value decreases due to the saturation of the RH molecules in the UP which is no longer bound to the UP molecules. The highest crack strength values occurred for the addition of the percentage of RH and SS to the UP material with the addition of 5% SS, which obtained a cracking force of 550 N while the strength of pure polyester was only 37 N. This shows that RH and SS materials can bond with UP molecules and some molecules of RH and SS can prevent cross-linking of polyester molecules. Meanwhile, the addition of SS up to 10% decreases the fracture force obtained, indicating that not all of the sago starch can bind to the polyester molecules.
Pelatihan Menggambar Mesin (CAD 3D Modeling Dan CAM) Untuk Mahasiswa Jurusan Teknik Mesin Universitas Muhammadiyah Sumbar Sumiati, Ruzita; Adriansyah, Adriansyah; Nusyirwan, Nusyirwan; Rama, Hilfama; Nasirwan, Nasirwan
JAPEPAM, Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 2 (2025): JAPEPAM
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat

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Abstract

Penguasaan teknologi Computer-Aided Design (CAD) dan Computer-Aided Manufacturing (CAM) merupakan kompetensi penting bagi mahasiswa Teknik Mesin dalam menghadapi tantangan industri modern yang mengutamakan automasi, presisi, dan efisiensi. Namun, keterbatasan fasilitas laboratorium dan sumber daya manusia di Universitas Muhammadiyah Sumatera Barat (UM Sumbar) menjadi kendala dalam penerapan pembelajaran berbasis CAD dan CAM. Oleh karena itu, kegiatan pengabdian ini bertujuan untuk memberikan pelatihan praktis dalam menggambar mesin menggunakan CAD 3D Modeling dan aplikasi CAM kepada mahasiswa Jurusan Teknik Mesin UM Sumbar, yang dilaksanakan melalui kolaborasi dengan Politeknik Negeri Padang (PNP). Pelatihan ini mencakup pemahaman konsep dasar CAD dan CAM, praktik pembuatan model 3D komponen mesin, dan proses integrasi model CAD ke dalam sistem CAM untuk simulasi pemesinan. Metode pelatihan yang diterapkan meliputi pendekatan teori dan praktik langsung di laboratorium Teknik Mesin PNP, yang telah dilengkapi dengan perangkat lunak CAD/CAM serta mesin CNC. Hasil kegiatan menunjukkan peningkatan signifikan dalam keterampilan mahasiswa dalam memodelkan komponen mekanik serta pemahaman mereka terhadap alur kerja CAD-CAM yang terintegrasi. Melalui pelatihan ini, mahasiswa memperoleh keterampilan teknis yang relevan dengan kebutuhan industri dan dapat mendukung kompetensi profesional mereka di bidang rekayasa desain dan manufaktur. Kegiatan ini juga mendorong peningkatan kualitas pembelajaran berbasis praktik di UM Sumbar melalui transfer pengetahuan dan kolaborasi antara perguruan tinggi.
Study on the Flexural Strength of Polyester Composite Beams and Coconut Husk Charcoal Powder nusyirwan, nusyirwan; Fikri, Hayatul
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 15, No 01 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v15i01.23591

Abstract

Polymer materials are being rapidly researched because they have the potential to replace metal materials, offering advantages such as low mass, ease of shaping, and moisture resistance. However, this material still has many disadvantages, including low mechanical strength and easy cracking under impact. Unsaturated polyester is a widely used matrix material for composite materials in the engineering field, such as for vehicle bodies and ship hulls. In this study, the flexural strength of polyester composites reinforced by coconut shell charcoal was studied. From flexural strength testing according to ASTM D 390-92, a tendency to increase flexural strength with the addition of a coconut shell charcoal mixture from 10% to 20% was observed; beyond 20%, the flexural stress decreased. The maximum flexural stress value obtained at a percentage of 20% coconut shell charcoal was 132.43 N/mm². This value can increase the maximum flexural stress of pure polyester, which was only 52.10 N/mm², by 253.35%
PENGARUH PENDIDIKAN HUMANISTIK TERHADAP PENINGKATAN KEMAMPUAN INSYA’ MAHASISWA PROGRAM STUDI PENDIDIKAN BAHASA ARAB STAIN WATAMPONE Nusyirwan, Nusyirwan
Jurnal Diskursus Islam Vol 1 No 3 (2013)
Publisher : Program Pascasarjana, UIN Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/jdi.v1i3.6638

Abstract

Tulisan ini merupakan penelitian mengenai salah satu pendekatan pendidikan yaitu pendekatan pendidikan humanistik. Tujuan penelitian ini adalah untuk menganalisis pengaruh pendekatan pendidikan humanistik terhadap peningkatan kamanpuan insya’ mahasiswa program studi pendidikan Bahasa Arab jurusan Tarbiyah STAIN Watampone. Penelitian ini didesain dalam bentuk penelitian eksperimen yang terdiri atas kelas kontrol dan kelas eksperimen. Pendekatan yang digunakan adalah pendekatan linguistik, pedagogis, humanistik, sosiologis, dan filosofis. Hasil penelitian ini menunjukkan bahwa sebelum diberi perlakuan menggunakan pendidikan humanistik nilai rata-rata kelas eksperimen adalah 130,56, sedangkan kelas kontrol adalah 130,44. Berdasarkan uji kesamaan dua rata-rata pretest dengan menggunakan uji statistik non-parametric dengan uji Mann Whitney pada SPSS 16, dapat disimpulkan bahwa kedua kelas memiliki kemanpuan yang sama dalam mengarang insya’. Setelah diberikan perlakuan dengan menggunakan pendekatan pendidikan humanistik pada kelas eksperimen, maka nilai rata-rata kelas eksperimen adalah 186,61, sedangkan kelas kontrol tanpa pendekatan humanistik nilai rata-rata 165,22. Adanya perbedaan nilai rata-rata antara kelas kontrol dengan kelas eksperimen membuktikan bahwa adanya peningkatan secara signifikan kemanpuan insya’ mahasiswa kelas eksperimen setelah diberikan perlakuan. Hal ini berarti bahwa terdapat pengaruh yang signifikan pendekatan pendidikan humanistik terhadap peningkatan kemanpuan insya’ kelas eksperimen.ABSTRACTThis article is a study on one of educational approaches that is humanistic educational approach. The purposes of this study are to analyze the influence of humanistic educational approach in improving the insya’ ability of the student of Arabic Language Education, Department of Tarbiyah, STAIN Watampone. This study is designed in the form of experiment research which involves a control class and an experimenttal class. The types of approach used are linguistic, pedagogical, humanistic, sociological and philosophical approach. The result of this study indicate that prior to being treated with a humanistic educational approach the everage value of the experimental class was 130,56, while the control class was 130,44. Based on the equation of two averages of pretest by using non-parametric statistical test and Mann-Whitney test in SPSS 16, it can be concluded that both classes have the same ability in writing (insya’i). After the classes were treated by using a humanistic educational approach, the everage value of the experimental class was 186.61, while the mean score of the control class without a humanistic approach was 165,22. The difference in the everage value of gain between experimental class and control class proves the existence of significat increase in insya’ ability experimental class student after treatment. This means that there ia siginificant influence of humanistic educational approach on the improvement of insya’  ability of the experimetal class.
Co-Authors AA Sudharmawan, AA Adam Malik Adriansyah Adriansyah Amalia Akita Anggi Septiawan Putra Aprianto, Hibatullah Anis Ardianto, Bagus Arifian, Naf'an Asmed Asmed Ayu Putri Ningsih Azizul Kholis, Azizul Basrullah Basrullah Br Bangun, Edmy Febriani CICIK SURIANI Daulae, Abdul Hakim Desmarita Leni Efiandi, Nota Ekayuliana, Arifia Elisma, Netri Fadhilla, Nadiyatul Fajri Arsyah, Ahmad Hasnul Fardinal Fardinal Fauziyah Harahap Fikri, Hayatul Haliatur Rahma, Haliatur Hamdani, Rifki Hamdani, Rifqi hasyim, hasyim Herkules Herkules, Herkules Hidayat, Rahmadani Hijar, Yul Ihsan Putra Erizal Ilham, M. Insani, Farhan Filza Jeremiah, Jogi Jumsu Trisno Jusafwar, Jusafwar Kusdiana, Yayu Maimuzar Maimuzar Malik , Adam Martinius Martinius Masril Masril Nasirwan Nasirwan Nefri, Jhon Nofriadi Nofriadi Nota Effiandi Nursamsu Nursamsu Purnomo, Yoga Amin Rama, Hilfama Rani, Mutya Reflin Riezky Idvi Alfitra Rita Noveriza Robby Novrizal Ruzita Sumiati Safrizal Safrizal Seno, Abdi Sibarani, Choms Choms Gary Ganda Tua Sihombing, Josephine Gloria Margareth Sinuraya, Kenari Br Sir Anderson Siti Saudah Sonki Prasetya Sri Wahyuni Sri Yuliani Syahmi Edi Syarifuddin Syarifuddin Tinaria, Lisa Widiyatmoko, Widiyatmoko Yul Hizhar Yuli Yetri Yuliarman Yuliarman Zubir, Zubir