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All Journal Jurnal Teknoin Jurnal Teknik Mesin Indonesia Kreasi: Jurnal Inovasi dan Pengabdian Kepada Masyaraka Komunita: Jurnal Pengabdian dan Pemberdayaan Masyarakat
Kuncoro Diharjo
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Economics, Econometrics & Finance Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Public Health Social Sciences

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KAJIAN PENGARUH TEKNIK PEMBUATAN LUBANG TERHADAP KEKUATAN TARIK KOMPOSIT HIBRID SERAT GELAS DAN SERAT KARUNG PLASTIK Kuncoro Diharjo
Teknoin Vol. 11 No. 1 (2006)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v11i1.96

Abstract

        In panels or components, there are holes for joinning with other part. There are two method for manufacturing a hole, i.e. by boring and molding processes. The objective of this research is to investigate the effect of hole manufacturing method on the tensile properties of hybride composite reinforced  chopped strand mat of E-glass fiber and woven roving fiber of plastic bag.         The materials in this research are plastic bag fiber, chopped strand mat of E-glass fiber (300 gr/m2), unsaturated polyester 157 BQTN-EX, and MEKPO hardener. The composite was made using press mold method, prepared with 4 laminates of glass fiber and 3 laminates of plastic bag fiber. The weight fraction fiber (Wf) of the composite was around 38%. The tensile test specimens were produced according to ASTM D 5766. In the middle of each specimen, there is a hole with 4, 6, or 8 mm in diameter. There are two types hole, i.e. holes were manufactured using boring  and molding process methods.         The result shows that the highest tensile strength of the composites occurs on the composite with 6 mm in diameter of hole manufactured by boring and molding process. It can be recommended that composite has the higher strength for 6 mm in diameter of hole for joining. The composites with 4 and 6 diameters of holes manufactured by molding process have higher tensile strength compared to that manufactured by boring process. In contrast, the tensile strength of the composite with 8 mm in diameter of hole produced by boring is higher than that of the composite with 8 mm in diameter of hole produced by molding process.Keywords : plastic bag fiber, E-glass fiber, molding process, boring.
Pengaruh kandungan serat dan perlakuan alkali terhadap sifat tarik, bending dan impak bahan komposit serat aren-poliester Arga Ahmadi Nugraha; Kuncoro Diharjo; Wijang Wisnu Raharjo
Jurnal Teknik Mesin Indonesia Vol 15 No 2 (2020): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v15i2.165

Abstract

Kajian ini bertujuan untuk menyelidiki efek dari fraksi volume serat dan perlakuan alkali (5% NaOH) serat terhadap sifat mekanis komposit serat aren acak dengan matrik poliester. Bahan utama yang digunakan adalah serat aren (acak), larutan alkali (5% NaOH), Unsaturated Polyester Resin dengan tipe 157 BQTN, dan hardener methyl ethyl keton peroksida (MEKPO). Metode compression molding (cetakan tekan) digunakan untuk membuat komposit dengan fraksi volume serat 0,15, 0,25, 0,35, dan 0,40. Perlakuan alkali dilakukan dengan cara merendam serat aren dalam larutan alkali (5% NaOH) dengan lama waktu perendaman 1, 2, 3, dan 4 jam. Sifat mekanis ditentukan dengan melakukan uji bending, uji tarik dan uji impak. Hasil kajian menunjukkan penambahan fraksi volume meningkatkan kekuatan bending, kekuatan tarik dan ketangguhan impak. Nilai tertinggi dari kekuatan bending, kekuatan tarik dan ketangguhan impak adalah 54,47 MPa, 25,61 MPa, dan 6,60 kJ/m2. Sifat mekanis komposit serat aren-poliester meningkat setelah diberi perlakuan alkali. Nilai tertinggi kekuatan bending, kekuatan tarik dan ketangguhan impak adalah 65,44 MPa, 27,92 MPa, dan 9,46 kJ/m2 setelah diberi perlakuan alkali selama 4 jam.
Pelatihan dan Produksi Baglog untuk Diversifikasi Usaha UKM Budidaya Jamur Tiram di Pondok Pesantren Al-Ihsaniyah Abul Faidl Ari, Ari Prasetyo; Kuncoro Diharjo; Supriyadi; Syamsul Hadi
KOMUNITA: Jurnal Pengabdian dan Pemberdayaan Masyarakat Vol 1 No 2 (2022): Agustus
Publisher : PELITA NUSA TENGGARA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60004/komunita.v1i2.27

Abstract

Budidaya jamur tiram di Pondok pesantren salafiah Al-Ihsaniyah Abul Faidl mempunyai kapasitas 6 - 12 Kg per hari. Usaha jamur tiram yang berjalan di pondok pesantren yaitu dengan cara membeli media tanam dalam baglog, sehingga biaya produksinya menjadi lebih mahal.Keterbatasan keterampilan dan peralatan yang menyebabkan para santri harus membeli baglog. Kondisi seperti ini tentunya menghilangkan potensi insentif besar yang seharusnya bisa didapatkan pondok pesantren. Kegiatan pengabdian ini membekali keterampilan para santri untuk membuat baglog secara mandiri dan melaui pengabdian ini para santri juga dibuatkan teknologi mesin tepat guna untuk mengisi baglog secara otomatis. Hasil kegiatan ini adalah diselenggarakannya pelatihan produksi baglog jamur tiram dan mesin pengisi baglog otomatis. Dengan adanya program ini, pondok pesantren Al-Ihsaniyah Abul Faidl dapat memperluas usaha dengan adanya mesin pengisi baglog otomatis.
Upaya Pengembangan Minat Literasi Kepada Siswa Sekolah Dasar Di Desa Logede Syiva Levaza; Stella Maris Mbangga Radja; Tara Nabila; Taufik Ardhiansyah; Tarisa Azizah; Taufik Hidayat; Tatasa Diva Cahyakirana; Taufiq Imtiyazurrozin; Ananda Restu Widyaningsih; Yasin Nabil Ajaba; Kuncoro Diharjo
KREASI : Jurnal Inovasi dan Pengabdian kepada Masyarakat Vol. 2 No. 1 (2022): April
Publisher : BALE LITERASI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (666.096 KB) | DOI: 10.58218/kreasi.v2i1.115

Abstract

Logede Village located in Pejagoan, Kebumen Regency, Central Java. The majority of the people make a living in the agricultural sector and the roof tile industry. Implementation of the KKN Tematik Membangun Desa program based on local village problems and potential. Several aspects that need support, namely in the education sector where learning during the pandemic was carried out using the Distance Learning (PJJ) method. KKN 86 UNS group made a movement in the form of a Literacy Class which aimed to increase reading interest, concentration, and train children to think critically. This literacy class was the result of a discussion between the village apparatus and our group. The implementation method began with an analysis of the information at the Logede Village Elementary School, continued with a survey and visit to the student learning activities then implementation of a literacy class. Concatenation literacy class activities Started with a grand opening to introduce this program to Logede Elementary School students, this event was filled with a drama show and singing performance from KKN UNS 86 group and talented students. Logede Elementary School students look so enthusiastic and happy when participating in this activity. Moreover, when we did concatenation literacy class activities the student felt pleased. The existence of the KKN UNS 86 group hoped that it can increase students' interest in term of reading and introduce the existence of a village library that can be use for reading and learning.
Co-Authors Ananda Restu Widyaningsih Arga Ahmadi Nugraha Ari, Ari Prasetyo Stella Maris Mbangga Radja Supriyadi Syamsul Ph.D M.A. Hadi Syiva Levaza Tara Nabila Tarisa Azizah Tatasa Diva Cahyakirana Taufik Ardhiansyah Taufik Hidayat Taufiq Imtiyazurrozin Wijang Wisnu Raharjo Yasin Nabil Ajaba