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The Effect of Heat Treatment on Hardness and Microstructure of Al-Cu Squeeze Casting Product Saifullah, Ali; Reynaldi, Ferdian; Aisyah, Iis Siti; Heri Soegiharto, Achmad Fauzan
JEMMME (Journal of Energy, Mechanical, Material, and Manufacturing Engineering) Vol 4, No 1 (2019)
Publisher : University of Muhammadiyah Malang

This research was conducted with the purpose of knowing the change mechanical properties of Al - Cu squeeze casting product which applied heat treatment and quenching. This study uses Al with the addition of 2% and 4% Cu,with the squeeze casting pressures applied are 100, 200, 300 and 400 bar. Heat treatment temperature constant at 520 ° C and 90 minute holding time. The heat treatment results were observed using Optical Microscopy with 800 times magnification and the hardness was measured using the Vickers hardness test method. . The highest result of hardness is on the pressure 400 bar with the addition of 4% Cu which is 120.53 VHN and the average percentage of the most Al2Cu compounds is 23.125%. Heat treatment followed by quenching process significantly increase the hardness, it is because of the more solid and smaller granular shape due to quenching

Manajemen Perilaku Organisasi Mahasiswa Sekolah Tinggi Agama Islam Negeri Jember: Managing Student Organizational Behavior at the State Islamic Institute of Jember Saifullah, Ali
Fenomena Vol 2 No 1 (2003): FENOMENA: Journal Penelitian STAIN Jember
Publisher : LP2M Universitas Islam Negeri Kiai Haji Achmad Siddiq Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35719/fenomena.v2i1.324

Student demonstrations at STAIN Jember increasingly exhibit anarchic and excessive tendencies, deviating from intellectual, sensitive, and moral frameworks. Guided by Spearman and Burt’s behavioral theories and Freud’s psychoanalytic perspective, this study addresses the need to develop skilled management strategies for student organizations, examines whether protests reflect intellectual parameters or emotional impulses, and explores integrating skilled management with organizational behavior. Using a qualitative case study design, data were collected through comprehensive interviews, participant observation, and documentation, employing snowball sampling and grounded theory analysis. Findings reveal that student organizations lack skilled management, with static structures and work programs, while student criticism is often driven by specific interests rather than substantive intellectualism. Furthermore, institutional systems at STAIN Jember—such as nontransparent governance and authoritarian policies—provoke reactive demonstrations. The study concludes that restructuring skilled management, reforming institutional systems toward transparency and adaptability, and modeling intellectual, sensitive, and moral behavior by leaders are essential to restoring credibility and fostering responsible academic activism. Demonstrasi mahasiswa STAIN Jember cenderung menunjukkan tindakan anarkis dan berlebihan, menyimpang dari kerangka intelektualitas, sensibilitas, dan moralitas. Berpijak pada teori perilaku Spearman dan Burt serta psikoanalisis Freud, penelitian ini bertujuan merumuskan manajemen terampil bagi organisasi mahasiswa, mengkaji apakah demonstrasi merupakan parameter intelektualitas atau emosi, serta mengintegrasikan manajemen terampil dengan perilaku organisasi. Dengan pendekatan kualitatif studi kasus, data dikumpulkan melalui wawancara mendalam, observasi partisipan, dan dokumentasi, menggunakan teknik snowball sampling serta analisis grounded theory. Temuan menunjukkan organisasi mahasiswa belum memiliki manajemen terampil; struktur dan program kerja bersifat statis, sementara kritik mahasiswa lebih didorong kepentingan tertentu而非 substansi intelektual. Sistem kelembagaan STAIN Jember yang kurang transparan dan otoriter turut memicu aksi reaktif. Penelitian menyimpulkan bahwa penataan manajemen terampil, reformasi sistem menuju keterbukaan dan adaptabilitas, serta keteladanan perilaku intelektual, sensitif, dan bermoral dari pimpinan mutlak diperlukan guna memulihkan kredibilitas dan menghasilkan aktivisme akademik yang bertanggung jawab.

Gugus Kendali Mutu: Suatu Upaya Meningkatkan Kualitas Output STAIN Jember: Quality Control Circle: An Effort to Improve the Output Quality of the State Islamic College (STAIN) Jember Saifullah, Ali
Fenomena Vol 3 No 1 (2004): FENOMENA: Journal Penelitian STAIN Jember
Publisher : LP2M Universitas Islam Negeri Kiai Haji Achmad Siddiq Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35719/fenomena.v3i1.347

The low quality of graduates from Islamic higher education institutions, particularly STAIN Jember, is a critical issue, evident in some alumni's inability to teach Arabic, read the Qur'an, and pass civil service selection tests. This research addresses the problem map of financial, material, and human resource management, as well as lecturer competence and suboptimal learning systems. The objective is to analyze quality control circles from the perspectives of resource management, lecturer competence, and student learning activities. The study employs a qualitative case study design, collecting data through comprehensive interviews, participant observation, and documentation, and analyzes them descriptively and interpretively using data and method triangulation. Key findings indicate that financial resource management requires greater transparency, infrastructure must be renovated to incorporate technology-based learning media, lecturer competence absolutely needs development, and student learning activities should be directed toward scientific and intellectual patterns. The research concludes that an integrated and sustainable quality control circle is essential, with recommendations for improved management accounting, facility renovation, and the establishment of cross-departmental scientific forums and literary study groups. Fenomena rendahnya kualitas lulusan perguruan tinggi agama, khususnya STAIN Jember, menjadi isu krusial yang tercermin dari ketidakmampuan sebagian alumni dalam mengajar bahasa Arab, membaca Al-Qur'an, serta lulus ujian Calon Pegawai Negeri Sipil. Penelitian ini bertolak dari peta masalah pengelolaan sumber daya finansial, material, dan manusia, serta kompetensi dosen dan sistem pembelajaran yang belum optimal. Tujuan penelitian adalah menganalisis gugus kendali mutu dalam perspektif pengelolaan sumber daya, kompetensi dosen, dan aktivitas belajar mahasiswa. Penelitian menggunakan metodologi kualitatif dengan rancangan studi kasus, pengumpulan data melalui wawancara komprehensif, observasi partisipan, dan dokumentasi, serta dianalisis secara deskriptif interpretatif dengan triangulasi data dan metode. Temuan utama menunjukkan bahwa pengelolaan sumber daya finansial perlu peningkatan transparansi, sarana prasarana harus direnovasi berbasis teknologi, kompetensi dosen mutlak dikembangkan, serta aktivitas belajar mahasiswa perlu diarahkan pada pola ilmiah dan intelektual. Penelitian menyimpulkan bahwa gugus kendali mutu yang terpadu dan berkelanjutan sangat diperlukan, dengan rekomendasi peningkatan manajemen akuntansi, renovasi fasilitas, serta pembentukan forum kajian ilmiah dan kepustakaan lintas jurusan.

Sistem Manajemen Pesantren dalam Konteks Dinamika: Sisi yang Terabaikan: Pesantren Management System in the Context of Dynamics: The Overlooked Aspect Saifullah, Ali
Fenomena Vol 6 No 1 (2007): FENOMENA: Journal of the Social Sciences
Publisher : LP2M UIN KH.Achmad Siddiq Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35719/fenomena.v6i1.401

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Manajemen Berbasis Sekolah (MBS): Suatu Paradigma Menuju Madrasah Mandiri (Studi Kasus MA Al-Qodiri Jember Tahun 2007/2008): School-Based Management (SBM): A Paradigm Toward an Independent Madrasah (A Case Study of Madrasah Aliyah Al-Qodiri Jember in the Academic Year 2007/2008) Saifullah, Ali
Fenomena Vol 7 No 2 (2008): FENOMENA: Journal of the Social Sciences
Publisher : LP2M UIN KH.Achmad Siddiq Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35719/fenomena.v7i2.434

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SIMULATION OF MONOCOQUE CHASSIS STRUCTURE OF ELECTRIC VEHICLES BASED ON COMPOSITE MATERIALS Daryono, Daryono; Yusvana, Bima Fatureza; Saifullah, Ali
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i2.2212

The chassis is one of the main components in a prototype electric motor vehicle, serving as the structural support for the drivetrain, steering system, and driver safety. This study aims to design and simulate a monocoque composite chassis as an alternative to the conventional ladder frame. The methodology employed finite element analysis using Ansys Composite Pre-Post (ACP) to define ply details, orientation, and laminate thickness. The materials used were Epoxy Unidirectional Carbon Fiber, Epoxy Carbon Woven, and PVC Foam as the core. The simulation results indicate that the chassis experienced a maximum deformation of 0.8933 mm, a maximum principal stress of 34.53 MPa, and a maximum principal elastic strain of 0.001028 mm/mm. The composite failure criterion value of 0.2666 (< 1) shows that the structure remains in a safe condition. Furthermore, the monocoque design successfully reduced the mass by 3.1 kg compared to the previous chassis, supporting improved vehicle efficiency. Overall, this study demonstrates that the monocoque composite chassis design provides a better combination of strength, stiffness, and mass efficiency compared to the ladder frame and has strong potential for application in the development of prototype electric motor vehicles.

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