Transportasi merupakan kebutuhan setiap manusia untuk menunjang pekerjaannya. Saat ini kendaraan ramah lingkungan yang banyak dikembangkan adalah kendaraan listrik. Kendaraan listrik dianggap bebas emisi dan dapat mempengaruhi kondisi lingkungan. Salah satu komponen penting pada kendaraan listrik adalah chassis. Untuk itu, diperlukan desain chassis yang tepat agar keamanan dan kenyamanan kendaraan terjamin. Dalam perkembangan kendaraan listrik, model penggerak motor listrik langsung ditempatkan pada roda atau yang sering disebut dengan in-wheel. Tujuan penelitian ini adalah (1) Mendesain chassis pada kendaraan listrik tipe in-wheel, (2) Menganalisis tegangan von mises dari desain chassis kendaraan listrik tipe in-wheel, (3) Menganalisis safety factor pada kendaraan listrik ramah lingkungan tipe in-wheel. Metode penelitian menggunakan simulasi. Simulasi dilakukan dengan menggunakan software Autodesk Inventor. Material yang digunakan yaitu baja AISI 1018 HR. Hasil Penelitian menunjukkan telah dihasilkan desain chassis untuk kendaraan listrik 6 orang penumpang. Tegangan von mises pada chassis minimum sebesar 0 dan maksimal 20,33 MPa, displacement minimum sebesar 0 dan maksimum sebesar 0,22, serta nilai safety factor minimum sebesar 12,3 dan maksimum sebesar 15. Berdasarkan hasil penelitian desain chassis yang telah dibuat dikategorikan aman secara teknis.

This study aims to develop an electronic module (E-Module) based on Project Based Learning which will be applied to the tapper turning material. The development of this e-module is carried out as a means to complement the availability of teaching materials used during the implementation of hybrid learning. This research is development research conducted with the Four-D Model development model which consists of four stages, namely Define, Design, Develop, and Disseminate. The instruments used to collect data are the feasibility test sheets for material experts and media experts, as well as test instruments to determine the practical evaluation by students. The developed e-module has been validated using a Likert scale on aspects of content feasibility, language feasibility, presentation feasibility, and graphic feasibility. The results of the study show that the e-module based on the project learning developed is very feasible and practical to be used in learning Lathe Machining Practice I, especially in the material of tape turning. This can be seen from the results of the material expert validation with a percentage score of 83.02% or in the very feasible category, as well as the media expert validation score of 83.5% also in the very feasible category. In addition, the results of the practicality assessment by students obtained a score of 80% or practical for use in learning.

Indonesia is an <span>ASEAN country with the most motorcycle users, where one-third of its population own motorcycles. The automatic motorcycle is the most widely used type due to its agility and fuel-efficient abilities. Sudden motorcycle damage could hamper the users' activities. However, most of these users do not know the reason for the damage. This paper presents the development of expert system for diagnosing the damage of motorcycle using forward chaining method. This system was implemented in mobile application. Through a mobile application, a solution for these users can be obtained. This application immediately discovers the damaged location and repair process. Furthermore, it acts as the first solution before motorcycle repair is carried out in a shop. In this study, the forward chaining method was implemented. It is based on a pattern-matching algorithm whose primary objective is to match facts (input data) with appropriate rules from the rule base. Various test results showed that the diagnostic application used for automatic motorcycle damages 100% worked.</span>

Penelitian ini bertujuan untuk mengembangkan jobsheet elektronik pada materi Praktik pengelasan GMAW (Gas metal Arc Welding) yang layak dan praktis untuk digunakan dalam pembelajaran. Metode penelPenelitian ini bertujuan untuk mengembangkan jobsheet elektronik pada materi Praktik pengelasan GMAW (Gas metal Arc Welding) yang layak dan praktis untuk digunakan dalam pembelajaran. Metode penelitian yang digunakan yaitu metode penelitian dan pengembangan dengan desain penelitian four-D model. Subjek penelitian adalah mahasiswa, ahli materi, dan ahli media. Teknik analisis data yang digunakan dalam penelitian ini adalah deskriptif kuantitatif menggunakan analisis persentase. Hasil penelitian menunjukkan bahwa jobsheet elektronik hasil pengembangan sangat layak dan sangat praktis untuk digunakan dalam pembelajaran praktik pengelasan GMAW. Hal ini terlihat dari hasil validasi ahli materi dengan skor persentase sebesar 84,64 % atau pada kategori sangat layak, sedangkan skor validasi ahli media sebesar 85,73 % juga pada kategori sangat layak. Selain itu hasil penilaian kepraktisan oleh mahasiswa memperoleh skor sebesar 81,33 % atau sangat praktis digunakan.itian yang digunakan yaitu metode penelitian dan pengembangan dengan desain penelitian four-D model. Subjek penelitian adalah mahasiswa, ahli materi, dan ahli media. Teknik analisis data yang digunakan dalam penelitian ini adalah deskriptif kuantitatif menggunakan analisis persentase. Hasil penelitian menunjukkan bahwa jobsheet elektronik hasil pengembangan sangat layak dan sangat praktis untuk digunakan dalam pembelajaran praktik pengelasan GMAW. Hal ini terlihat dari hasil validasi ahli materi dengan skor persentase sebesar 84,64 % atau pada kategori sangat layak, sedangkan skor validasi ahli media sebesar 85,73 % juga pada kategori sangat layak. Selain itu hasil penilaian kepraktisan oleh mahasiswa memperoleh skor sebesar 81,33 % atau sangat praktis digunakan.

E-Learning, competency, lathe, Google Classroom.This study aims to determine the effect of the use of E-learning on the competence of doing work using a lathe on students of Mechanical Engineering Education UNNES. The type of E-learning used is Google Classroom which is a product of Google for Education. In addition to knowing the effect on student learning outcomes, this study also aims to determine student responses to learning using Google Classroom. The research method used in this study is the experimental method. The design used in this study is the Randomized Control Group Pre-test-Post-test Design. The implementation of this research is in the Department of Mechanical Engineering UNNES with a population of Mechanical Engineering Education study program students who are currently taking the Machining Process course. The samples taken are group 1 and group 2 with the number of 20 participants each as an experimental class and class control. Retrieval of student learning outcomes data from each class is done by combining test results and project results. Data analysis in this study used the Independent t-test. The next step is to compare the average of the two groups' tests. The results of the study indicate that the use of google classroom can increase student knowledge on the material doing work with a lathe.