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All Journal Rotasi Bulletin of Electrical Engineering and Informatics Rekayasa Mesin Journal of Mathematical and Fundamental Sciences PROSIDING SEMINAR NASIONAL CENDEKIAWAN Prosiding Seminar Nasional Pakar Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Indonesian Journal of Computing, Engineering, and Design

Lydia Anggraini

President University

Author-ID : 444621

Arts Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Transportation

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Sifat Mekanis dan Struktur Mikro pada Sambungan Las Gesek Baja SCM415H untuk Aplikasi Poros Roda Belakang Anggraini, Lydia; Putra, Bobby Salim
Jurnal Rekayasa Mesin Vol 10, No 2 (2019)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jrm.2019.010.02.9

This research aims to evaluate the mechanical properties and microstructure of steel alloy SCM415H processed by friction welding for rear axle shaft application. Friction welding is a process to connect materials without using fillers and has a good quality of joint strength. Two different pressures of friction welding for 2.5 and 6 MPa were applied in this research. In addition, the initial condition of non-welded in SCM415H material was also investigated. In order to evaluate the mechanical properties, several mechanical tests i.e. Vickers hardness, tensile, torque and ultrasonic test were carried out. The result of this research is better welding connection is obtained on the final pressure of 6 MPa. The Vickers hardness is 390 HV was obtained on the welding connection area. Furthermore, the result proved that the higher pressure will affect the higher strength in the welding connection interface. The result of this research is confirmed the welding connection was not easily broken. Therefore, this research has an important role to determine the pressure applied to the friction welding.

Fatigue Analysis pada Pegas Daun Jenis SST 74 dalam Aplikasi Industri Alat Berat dengan Pemodelan Metode Elemen Hingga Anggraini, Lydia; Akhir, Yaummil Chairil Agoest
ROTASI Vol 20, No 2 (2018): VOLUME 20, NOMOR 2, APRIL 2018
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Pada industri manufaktur dan rekayasa alat berat dibutuhkan pemeliharaan yang baik guna menghasilkan produk berkualitas tinggi. Namun, kerusakan secara tidak sengaja dan menyebabkan kerugian besar baik dalam hal moral maupun material bagi perusahaan bisa saja ditemukan. Oleh karena itu, analisis diperlukan untuk meminimalkan kemungkinan kecelakaan. Penelitian ini bertujuan menganalisa kelelahan pada pegas daun untuk aplikasi industri alat berat dengan Metode Elemen Hingga. Pemodelan tersebut dilakukan dengan menghitung beban yang diberikan ke pegas daun, bahan pegas daun dan umur pegas daun yang sebenarnya. Setelah data dikumpulkan, analisis siklus pegas daun dilakukan untuk memberikan beberapa perbaikan. Dengan menggunakan FEA, analisis pertama adalah Von-Mises Stress dan dilanjutkan dengan analisis Life Cycle menggunakan ANSYS, kedua analisis tersebut dapat dihasilkan. Hasil Von-Mises Stress yang dihasilkan di dekat fatigue area adalah 3,923 x 108 Pa dan life cycle antara 91.000 - 93.000 siklus. Di sisi lain, life cycle yang sebenarnya dari pegas daun adalah 108.000 siklus dengan life time adalah 6 bulan. Dengan demikian, hasil FEA adalah perkiraan kondisi nyata pegas daun. Penelitian ini juga memberikan beberapa perbaikan terhadap geometri pegas daun. Perbaikan geometri memberikan hasil dalam mengurangi Von-Mises Stress dan meningkatkan life cycle pegas daun. Von-Mises Stress menurun hingga 3,49 x 108 Pa dan siklus hidup meningkat hingga lebih dari 5 x 105 siklus. Masa pakai juga meningkat hingga 30 bulan.

Perencanaan Komponen Dies Pipa PVC Jenis SNI-10 dengan Computer Aided Design and Drafting Lydia Anggraini; Tirta Kumala
Journal of Mechanical Engineering and Mechatronics Vol 1, No 01 (2016): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

Abstract. In the manufacturing industry, the machine components are not only able to process metallic materials but also other materials such as polymers, ceramics, and composites. Although, the PVC pipe is one of the many common types of polymers. This is because, the PVC pipe has several advantages such as light weight, high corrosion resistance, easy to install, and more economic. The process of creating an application program of machine elements for the manufacture of dies on a PVC pipe, the process parameters need to be planned well. Therefore, the analysis of these calculations is made to be used as an input data in program design elements of the planning application machines for the manufacture of dies on PVC pipe. This program uses a Computer Aided Design and Drafting (CADD) that use AutoLISP program for the imaging process and planning and also Dialogue Control Language to do the selection process, from materials selection to the calculation until the image as required to be produced. An expected program designing application machine elements for the manufacture of dies on PVC pipe can be applied to improve the previous method which is time consuming and the accuracy of the imaging process.Keywords. Designing, Drawing, Computer Aided Design and Drafting, PVC Pipe, AutoLISP.

OPTIMATION PARAMETERS OF CNC MILLING PROGRAMMING MACHINE ON THE PROCESS TIME AND ITS EFFECT ON THE EFFICIENCY Lydia Anggraini; Ivan Junixsen
Journal of Mechanical Engineering and Mechatronics Vol 3, No 2 (2018): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

The problems revealed in this research is about Optimization parameters of CNC milling programing machine on the process time and its effect on the efficiency. The purpose of this research are to know the effect of feed rate, depth of cut, and maximum stepdown on processing time in CNC milling programming and searching for the best machining parameters that yield optimal processing time on CNC milling programming. The result can be in the simulation of machining distance or operation time, length of feed step or feed cut length, and length of step without feeding or fast traverse length. Experiment result data is used for see the influence, and contribution of each parameter to the machining process time, also the contribution of the optimized parameters for each process that makes the CNC milling machining process time, and cost will be more efficient.

PEMODELAN DAN ANALISA STRUKTUR MEKANIKA PADA KONTROL SISTEM ADAPTIF END EFFECTOR DENGAN DYNAMIXEL AX-18A MOTOR SERVO Lydia Anggraini; Ardhi Bebi Laksono
Journal of Mechanical Engineering and Mechatronics Vol 3, No 1 (2018): JOURNAL OF MECHANICAL ENGINEERING AND MECHATRONICS
Publisher : President University

The main objective of this project is to make a descriptive contribution to the understanding of adaptive end-effector design combined with servo motors. The simulation and design of this tool is located at the end of the robotic arm, which is one of the most researched topics in the world of robotics and the automation industry. End-effector is a design system in an automation process that must take into account the many possibilities of statics and mechanical responses in the development of facing intense competition in the industrial world. To determine the enhancements on a robot, the end-effector will be designed taking into account the various possibilities that occur in various variations on the workpiece response, so that it can simulate various levels of friction and pressure as well as the effects of end-effector contacts with various objects. This thesis introduces an integrated design process for the design of two-finger Gripper using simulation. To facilitate the integrated design of the Gripper, the author uses Matlab R2015a software/ Simulink (SimMechanics) and Inventor as a 3D Cad Model. The Servo motor that will be used here is a type of Dynamixel AX-18A servo motor which has a speed of 97RPM and Torque of 1.8 N.m with a 12Volt voltage. To deal with the industrial revolution 4.0, design and design such as this tool will help in the process of improvisation as technology is growing rapidly in the hope of minimizing excessive costs when making improvements. From this thesis can be seen the power response, torque, speed, power in, power out, efficiency and current. When a case requires certain specifications, then with this calculation it can easily solve the problem simply by replacing the motors that are in accordance with the desired specifications.

Penurunan Ukuran Butir Serbuk Besi dengan Ball Milling 744 rpm dan Ball to Powder Weight Ratio 1:5 Haris Cahyo Triatmono; Muslimin Muslimin; Lydia Anggraini
Journal of Mechanical Engineering and Mechatronics Vol 2, No 01 (2017): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

Creating a magnet with powder metallurgy technology, the materials to be processed must be available in powder form with a relatively very fine size, in micrometers (μm). In the magnetism of materials, grinding the material to obtain a very fine powder size is intended to obtain a magnetic material powder having a single domain. One tool commonly used to reduce the size of the powder to reach the size of a micrometer (μm) is a ball milling machine. This tool works by using hard balls in a drum. The balls are clashing each other with ground powder until the powder size becomes very small. Ball milling is using a strong material SS400, so it is expected to last long. While the special drum uses a base material of metal that is non-magnetic based Austenitic Manganese Steel. Ball uses a Ni-Hard ball. The AC motor measured with a stroboscope while carrying the load is 744 rpm. The process of smoothing that occurs inside the tube when the machine is run is the occurrence of collisions between Ni-Hard balls with the best grind sand is 83.3 grams with the number of Ni-Hard ball 101 fruit with a diameter of 10 mm and 75 pieces with a diameter of 11 mm, with using a 1:5 ratio. The process of shooting using Keyence optical microscope VHX 5000 with 200x bundle. Significant size changes occur with grinding with 10 mm diameter Ni-Hard ball from 15 minutes to 45 minutes. Then by using a Ni-Hard ball diameter of 11 mm also changed although not too significant.

FINITE ELEMENT ANALYSIS WITH STATIC AND DYNAMIC CONDITIONS OF SPARE WHEEL CARRIER FOR OH 1526 FABRICATED BY SAPH 440 HOT ROLLED STEEL Norbertus Krisna Aditya Utomo; Lydia Anggraini
Journal of Mechanical Engineering and Mechatronics Vol 4, No 1 (2019): JOURNAL OF MECHANICAL ENGINEERING AND MECHATRONICS
Publisher : President University

Spare Wheel Carrier is a component that must exists in a heavy duty vehicle. The function of this part is to store additional wheel in order to deal with punctures that might happen to the tire. This part is usually placed in the middle of the vehicle in order to maintain the position of center of gravity of the vehicle. The purpose of this research is to analyze the strength of SAPH 440 as the manufacturing material of the Spare Wheel Carrier from one automotive company. The Spare Wheel Carrier will endure a load of a replacement tire for its entire cyclic load. The load itself will generate stresses and strains in the part, especially in the welding joint. Therefore, the analysis is to be done to provide the automotive company with the result to determine improvement that should be made. The method that is used in this research is using CATIA software to create the three dimensional model of the part. Later, we import the model to ANSYS software to analyze the equivalent stress, equivalent elastic strain, directional deformation, and cyclic load for steady load, live load, and shock load. The calculation shows that the part can endure the force from steady load, with the estimated cyclic load of 70,723 cycles. But for live load, the stress and strain will be happening around the yield strength and offset yield strength and the estimated cyclic load declining significantly to 6,358.6 cycles. Furthermore, the shock load result stated that the stress and the strain are exceeding the yield strength and reduces the estimated cyclic load to 1,843.9 cycles. In conclusion, the material is proven to be safe for usage as the Spare Wheel Carrier manufacturing material.Keywords. spare wheel carrier, SAPH 440, stress, strain, deformation, cyclic load

ANALISA STRUKTUR MIKRO DAN SIFAT MEKANIK PADA COPPER-IRON MELALUI PROSES MECHANICAL MILLING DAN CONTINUOUS SINTERING Asep Suhandi; Lydia Anggraini
Journal of Mechanical Engineering and Mechatronics Vol 2, No 02 (2017): Journal of Mechanical Engineering and Mechatronics
Publisher : President University

Mechanical Alloying (MA) / Mechanical Milling (MM) is a process of processing of solid metal powders including the union and re-destruction of powder particles by using high-energy ball mill. The difference depends on whether material transfer is involved or not during processing. The study was conducted by analyzing the effect of the mechanical milling process by comparing the microstructure and mechanical properties of the copper-iron between the ones before milling (sample 1) and after milling for 2 hours (sample 2). The sample was made into a green compact cold pressing process with an emphasis system using mechanical mechanisms and dual emphasis techniques. Sintering process using continuous type machine with conveyor belt mesh and furnace type is muffle. After that cooled with natural water jacket process. Vicker hardness testing and strength testing (tensile strength test) is performed to determine the mechanical properties of copper-iron alloys that occur. The mean value of sample 1 hardness (before milling) was 39.8 HV. The mean value of sample hardness 2 (after milling) was 74.9 HV. The value of the yield strength (σ) of sample 1 is 17.597MPa, and the value of ductility (ε) is 0.119. The value of the yield strength (σ) of sample 2 is 18.547MPa, and the value of ductility (ε) is 0.073. The observation of micro structure was done to know the physiological surface of the alloy formed and to know the distribution of the composition. Observation of sample microstructure 1 shows solid phase formation ε (silver color) is an area of iron element formed with large size. Solid phase γ (orange color) is an area of copper element formed with large size. The visible elements are copper (Cu) and iron (Fe) which have a large percentage formed with large size (> 50 μm), and the pore is also large (> 50 μm). For carbon element (C), it looks gray, with a small amount. For other elements, such as zinc (Zn), phosphorus (P), and Tin (Sn), generally, they are at the grain boundary of iron (Fe) and copper (Cu) elements. Observation of sample microstructure 2 shows solid phase formation ε (silver color) showing iron area area formed with smaller size. The solid phase γ (white color) shows the copper element area formed with a smaller size. The elements seen are copper (Cu) and iron (Fe) with a small size (<50 μm), and small pores occur. From the test results and analysis showed that by shrinking the size of metal powder by milling for 2 hours can increase the hardness and yield strength of the product. Although the product becomes more brittle which is indicated by the decreased ductility value.

ANALYSIS OF COMPOSITE ELECTRIC VEHICLE BODY Lydia Anggraini; Ida Bagus Madra Gana
Journal of Mechanical Engineering and Mechatronics Vol 5, No 1 (2020): JOURNAL OF MECHANICAL ENGINEERING AND MECHATRONICS
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jmem.v5i1.787

This paper presents a study of a composite car body using finite element method. The body is made of surface model and the study is conducted to simulate the possible deformation of the body under certain load. The objective is to find tha ideal thickness of the composite body as to minimize the vehicle weight. In this research, the strength analysis using finite elements will be explained and the deformation of the body is investigated for finding a possibility to improve this research.

ANALISIS CACAT POROSITAS PADA ALUMINIUM SEBAGAI APLIKASI TUAS KENDARAAN BERMOTOR DIPROSES DENGAN DIE CASTING TEKANAN TINGGI Sugeng Sugeng; Lydia Anggraini
PROSIDING SEMINAR NASIONAL CENDEKIAWAN Prosiding Seminar Nasional Cendekiawan 2017 Buku III
Publisher : Lembaga Penelitian Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25105/semnas.v0i0.2521

Penelitian ini membahas pengujian dan analisis material retak Aluminium (Al). Alsebagai handle tuas digunakan untuk alat pengereman pada kendaraan bermotor yangdiproduksi oleh perusahaan manufaktur. Cracking terjadi pada tuas pegangan karenakandungan bagian porositas dari gas hidrogen. Adanya H2 bisa disebabkan oleh prosespengecoran dan desain mati yang kurang sempurna terutama di pintu gerbang atauSandung lamur dan meluap. Pada proses pengecoran ditemukan bahwa parameterproses tidak memiliki standar. Berdasarkan latar belakang ini, dilakukan penelitian danperbaikan pada tuas penanganan Al yang dipilih untuk mengatasi masalah ini. Tujuan daripenelitian ini adalah untuk menerapkan standar pada proses pembuatan tuaspenanganan bagian Al dan optimasi konstruksi. Perbaikan dalam proses pembuatanbagian dan desain die diperoleh dari hasil analisis. Hasil perbaikan ini dievaluasi ulangmelalui tahap kimia dan uji mekanis, seperti uji densitas dan uji tarik pada benda kerja(part handle tuas). Beban pada uji tarik adalah 25 dan 35 kg, dan hasil uji tarik telahmemenuhi standar yang ditetapkan oleh perusahaan kendaraan bermotor.

Co-Authors Akhir, Yaummil Chairil Agoest Annisa Nur Wahyuni Annisa Nur Wahyuni Aprilia Putri Laurina Ardhi Bebi Laksono Asep Suhandi Haris Cahyo Triatmono Haryo Bisono Setyadi Hendra Jaya Tarigan Ida Bagus Madra Gana Ivan Junixsen Joni Welman Simatupang Lutfi Fadilah Muslimin Muslimin Naoki Matsuzuka Norbertus Krisna Aditya Utomo Putra, Bobby Salim Rendi Hernawan Sugeng Sugeng Tetuko Kurniawan Tirta Kumala Yoshitada Isono Zairullah Azhar

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