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Efek Waktu Perlakuan Panas Temper Terhadap Kekuatan Tarik dan Ketangguhan Impak Baja Komersial Bakri, Bakri; ChandraBhakty, Sri
SMARTek Vol 4, No 2 (2006)
Publisher : SMARTek

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Abstract

Tujuan penulisan ini adalah untuk menganalisa efek waktu perlakuan panas temper terhadap kekuatan dan ketangguhan baja komersial. Spesimen kekuatan tarik dan ketangguhan impak di austenisasi pada temperature 1000oC selama 45 menit dan di-quenching ke dalam oli. Proses ini dilanjutkan dengan proses temper selama 1 jam, 2 jam, 3 jam dan 4 jam. Hasil pengujian menunjukkan bahwa kekuatan tarik dan ketangguhan tidak terlalu signifikan perubahannya terhadap variasi  waktu temper
Analisis Sifat Mekanis Kayu Ebony Di Sulawesi Tengah Bakri, Bakri
SMARTek Vol 6, No 1 (2008)
Publisher : SMARTek

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Abstract

Kayu ebony atau kayu hitam merupakan jenis kayu yang tumbuh di daerah  tropis seperti di Sulawesi Tengah. Jenis kayu ini digunakan sebagai bahan bangunan, kerajianan, dan furnatur. Dalam pembuatan barang jadi, kayu ebony (hitam) umumnya dilakukan perlakuan sebelumnya seperti pengeringan dan pengerjaan mekanis. Pengetahuan akan sifat mekanis dari  jenis kayu ini sangat diperlukan. Dalam penelitian ini dilakukan pengujian sifat mekanis berupa kuat tarik, kuat tekan, kuat geser, kuat lentur dan tingkat kekerasan. Metode yang digunakan dalam pengujian kayu ebony yang diambil sampel secara random dari salah satu pengusaha kayu di Palu- Sulawesi Tengah adalah metode eksperimen. Dari hasil pengujian diperoleh a) kadar air dan berat jenisnya yaitu 12,7 % kadar air dan  berat jenis, b) sifat mekanis kayu ebony yang diuji meliputi kuat tarik dengan pembebanan searah serat ( 219,66 MPa) dengan keuletan 14,05 %, kuat tekan searah serat (80,18 MPa), kuat geser searah serat (9,15MPa), kuat lentur /bending  dalam hal ini adalah Modulus of Rupture (157,19 MPa) dan Modulus elastisnya adalah 17.345,46 MPa, dan tingkat kekerasan pada kayu eboni adalah HB 144,67 tegak lurus serat dan HB 141,38 yang searah serat
METODE PEMBELAJARAN MATA KULIAH STATIKA STRUKTUR BERBASIS MODUL DAN MODEL VISUALISASI Bakri, Bakri
SMARTek Vol 9, No 2 (2011)
Publisher : SMARTek

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Abstract

Mata kuliah Statika dan Struktur adalah kelompok mata kuliah keahlian. Tujuan mata kuliah inidapat memberikan mahasiswa baru dasar yang kuat dengan memberikan penyelesain masalahdan menjelaskan metode menerapkan teknik permasalahan. Untuk mengantisipasi hal ini,diperlukan metode kemunikatif dan interaktif dengan benar. Metode pengajaran dari sistemmodul dan visualisasi telah diterapkan dalam tulisan ini. Penerapan metode ini dibuat modul danbahan visualisasi yang membantu mahasiswa untuk memahami materi dalam prosespembelajaran. Dalam kelas, materi mata kuliah diberikan oleh tim pengajar dimana semuamahasiswa menerima modul untuk mempermudah memahami materi. Modul juga dibuat dalambentuk power point untuk visualisasi. Hasil metode ini tidak menunjukkan hasil yang signifikankarena persentase lulus mahasiswa rendah. Dan juga menujukkan bahwa minat mahasiswadalam mata kuliah ini dengan hubungan analisis adalah rendah di mana mahsiswa masihmemiliki motivasi yang rendah dalam mengumpulkan tugas
PENENTUAN SIFAT MEKANIS SERAT SABUT KELAPA Bakri, Bakri
Jurnal MEKANIKAL Vol 1, No 1 (2010)
Publisher : Jurnal MEKANIKAL

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Abstract

Coir fibres are obtained from coconut husk.  In application of composite materials, coir fibres  are  influenced  by  mechanial  properties.    This  study  aims  to  characterize  the mechanical properties of coir fibres. To characterize mechanial properties of coir fibres, variation of gauge length of fibres was conducted. The result showed that variability of cross  setional  areas  influenced  mechanical  properies  and  that  the  Young’s  modulus, breaking stress and breaking strain can be determined. 
TINJAUAN APLIKASI SERAT SABUT KELAPA SEBAGAI PENGUAT MATERIAL KOMPOSIT Bakri, Bakri
Jurnal MEKANIKAL Vol 2, No 1 (2011)
Publisher : Jurnal MEKANIKAL

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Abstract

Natural fibres as reiforcement of composite have been concerning in the last decade. These have changed in use convestional fibre like glass fibre and carbon fibre related to environmental effect. One of natural fibres can potensially change conventional fibre is coir fibre. This fibre is abundant in tropical areas such as India, Brazil and Indonesia. In this paper, an overview of aplication of coir fibre as reinforced composite in some uses was described.
ANALISIS VARIASI PANJANG SERAT TERHADAP KUAT TARIK DAN LENTUR PADA KOMPOSIT YANG DIPERKUAT SERAT Agave angustifolia Haw Bakri, Bakri; Iqbal, Mohammad; Rifki, Mohammad
Jurnal MEKANIKAL Vol 3, No 1 (2012)
Publisher : Jurnal MEKANIKAL

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Abstract

Natural fibre composites have been developed for some applications. One of potential natural fibre for composite is angustifolia Haw Agave fibre.  In this research, the tensile strength and flexural strength of agave fibre composite with variations of fibre length were determined. Fibre agave (treated and untreated) with 1 cm, 3 cm and 5 cm length was used as reinforced composite.    The results showed that the maximum tensile strength of agave fibre composite with untreated fibre occurs in 5 cm length, meanwhile with treated fibres the tensile strength tends to similar for each fibre length; and agave fibre with 5 cm length  as reinforced composite has higher flexural strength than other fibre lengths for treated and untreated fibres.
PENGARUH LINGKUNGAN KOMPOSIT SERAT SABUT KELAPA UNTUK APLIKASI BALING-BALING KINCIR ANGIN Bakri, Bakri; Chandrabakty, Sri; Alfriansyah, Alfriansyah; Tahir, Mohammad
Jurnal MEKANIKAL Vol 5, No 1 (2014)
Publisher : Jurnal MEKANIKAL

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Abstract

Abstract: Environmetal Effect of Tensile, Modulus and Shear Strength of Coir Fibre Composite. The aim of this research is to know the environmetal effect of tensile, modulus and shear strength of coir fibre composite. In this research, coir is used as reinforcement and matrix uses epoxy resin. Coir is soaked in water with 5% NaOH during 24 hours. Composite is moulded with 17 % fibre volume fraction and 83% matrix volume fraction. Then, the tensile specimen used ASTM D638-02 and shear specimen used ASTM D5379 standard. Universal Testing Machine is used to test of these spesimens. The specimens of tensile and shear include without and with treatment to environmental influence during 10, 20, and 30 days. The result shows that tensile strength, modulus and shear strength  of  specimen treatment during 10, 20, 30 days are not significantly decreased   from  specimen without treatment. This result can be used as recommadation for material of wind blade for the future.   Keywords: composites, coir fiber, shear strength, tensile strength
MINAT BERKARIR MENJADI AKUNTAN PUBLIK PASCA IMPLEMENTASI UU NO 5 TAHUN 2011 KAJIAN BERDASAR EXTENDED THEORY OF REASONED ACTION (TRA) BAKRI, BAKRI
AL-Buhuts Vol 10, No 1 (2014): Al-Buhuts
Publisher : AL-Buhuts

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Abstract

Dengan disyahkan UU No.5 Tahun 2011 maka landasan hukum akuntan publik di Indonesia menjadi jelas. Penelitian ini merupakan pengembangan dari model Extended Theory of Reasoned Action (TRA), yang akan melihat perilaku mahasiswa terhadap karir akuntan publik pasca implementasi UU Akuntan Publik. Penelitian ini dilakukan pada mahasiswa Jurusan Akuntansi di Kota Makassar dengan sampel sebanyak 110 yang dipilih berdasarkan stratified random sampling. Dalam penelitian ini digunakan metode gabungan/mixed method yaitu penggabungan metode kuantitatif dan kualitatif. Pendekatan kuantitatif yaitu regresi linier berganda dan analisis jalur yang merupakan metode utama yang  dilengkapi dengan pendekatan kualitatif sebagai pengkayaannya. Hasil penelitian berhasil membuktikan hipotesis penelitian yang berarti bahwa: (1) sikap, norma subyektif dan kontrol individu berpengaruh terhadap minat menjadi akuntan publik pasca implementasi UU Akuntan Publik. Selanjutnya minat tersebut akan mendorong seseorang untuk merencanakan karir sehingga kedepan dapat mewujudkan minatnya tersebut. (2) Keberadaan UU Akuntan Publik menjadikan kedudukan, hak dan kewajiban Akuntan Publik menjadi semakin jelas dan terhormat sehingga implementasi UU tersebut telah mendorong minat mahasiswa untuk berkarir menjadi akuntan publik.  With the approved Act No. 5/2011 the legal basis of public accountants in Indonesia became clear. This research is the development of a model of Extended  Theory of Reasoned Action(TRA), which will look at the behavior of students towards careers in accountant after implementation Certified Public Accountants Law. This research was conducted at the Department of Accounting students in the city of Makassar with a total of 110 samples were selected by stratified random sampling. This study used a combined method / mixed method both quantitative and qualitative methods. Quantitative approaches as the main method used multiple linear regression and path analysis. On the other hand, qualitative approach is used as the compliment. The results proved the hypothesis of the study which means that: (1) attitudes, subjective norms and perceived behavioral control effect on intention became public accountant after the implementation of the Law on Public Accountants. Further intention will encourage someone to plan ahead to realize the career that interests them. (2) The existence of the Public Accounting Act makes the position, rights and obligations of public accounting is becoming increasingly apparent and valued so that the implementation of the Act has led to a career interest of students into public accounting.
ANALISIS KOMITMEN PROFESIONAL DAN SOSIALISASI ANTISIPATIF SERTA HUBUNGANNYA DENGAN WHISTLEBLOWING Bakri, Bakri
Al-Mizan Vol 10, No 1 (2014): Juni 2014
Publisher : IAIN Sultan Amai Gorontalo

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Abstract

Accounting profession experienced a crisis of confidence as much a failure of ethics . Because it emphasized the importance of professionals in improving ethical behavior from the start of their career started , even before they enter the profession. This research is aimed at behavioral accounting research to examine differences in the level of professional commitment and anticipatory socialization ( proxied by financial reporting ) as well as its relationship with the perception of the importance of whistleblowing which includes whistleblowing and whistleblowing intention them .The method used in this research was a survey of students . This study used a sample of university accounting students Loulembah Gorontalo . To examine the relationship of professional commitment and anticipatory socialization to the whistleblowing used regression test . Meanwhile, to see how the level of professional commitment and anticipatory socialization and perceptions of the importance of whistleblowing and whistleblowing intention among accounting students used simultaneously and partial test of each variable .The results showed that there is a relationship between professional commitment and anticipatory socialization to whistleblowing . And of the partial test results obtained that all the variables that have significant differences .
SYARIAH OBLIGATION: PROSPECTS AND ITS CHALLENGES IN INDONESIA Sudirman, Sudirman; Bakri, Bakri
Al-Ulum Vol 15, No 1 (2015): Al-Ulum
Publisher : Institut Agama Islam Negeri (IAIN) Sultan Amai Gorontalo

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Abstract

This writing is designed to investigate prospects and challenges facing Syariah Obligation (sukuk) in Indonesia. In this study, we found Syariah obligation (sukuk) development have good prospect. There are factors supporting Syariah obligation (sukuk) in Indonesia, some of which are significant population, government support, and domestic economic stability over percent per year, flow of fresh fund by Middle East, and making complete regulatory framework, as well as the rise of global Syariah market. Notwithstanding sukuk potential, some challenges are exist, for examples, drawback of regulation, uncertainty of taxation, most of Syariah financial products are “debt-based” or “debt-likely”, less investor understanding of Syariah obligation instrument, and not quite conducive investment climate  and complicated bureaucracy.  -----Tulisan ini bertujuan untuk mengkaji prospek dan tantangan obligasi syariah (sukuk) di Indonesia. Pada penelitian ini, ditemukan bahwa prospek pengembangan obligasi syariah (sukuk) di Indonesia cukup baik. Terdapat beberapa faktor yang mendukung keberadaan obligasi syariah (sukuk) di Indonesia, antara lain: jumlah penduduk yang banyak, dukungan dari pemerintah, Stabilitas perekonomian dalam negeri, di atas persen pertahun, mengalirnya dana segar dari timur tengah, dan regulatory farmework yang cukup memadai, serta bangkitnya pasar global syariah. Meskipun potensi sukuk cukup baik, tetapi tetap saja memiliki sejumlah tantangan, antara lain: adanya kelemahan dari aspek regulasi, ketidakpastian dari segi perpajakan, kebanyakan produk keuangan syariah bersifat” debt-based”atau “debt-likely, kurangnya pemahaman oleh investor terhadap instrumen obligasi syariah, dan iklim investasi yang kurang kodusif serta birokrasi yang berbeli-belit.