Endurance Technologies Design Engineer Interview: Rounds, Questions and Preparation

What the job involves

A Design Engineer in manufacturing and automobile sectors creates 3D CAD models, detailed drawings, and engineering specifications for components and assemblies. They work on design validation, tolerance analysis, and design for manufacturability, often collaborating with production and quality teams. The role involves iterative design improvements, cost optimization, and ensuring compliance with industry standards.

Role and Technical Knowledge

1. 1

   What is the difference between a datum and a datum feature in GD&T?

   A strong answer explains that a datum is a theoretical exact point, axis, or plane, while a datum feature is the actual physical feature on the part used to establish the datum. Mention how datums are used in inspection and assembly.

2. 2

   How do you perform a tolerance stack-up analysis for an assembly?

   Cover both worst-case and statistical methods. Explain that you identify critical dimensions, assign tolerances, and calculate the cumulative effect to ensure fit and function. Mention using software like Excel or dedicated tools.

3. 3

   What are the key considerations when designing a component for injection molding?

   Discuss uniform wall thickness, draft angles, fillets, rib design, and gate location. Emphasize avoiding sharp corners and ensuring easy ejection. Also mention material shrinkage and cycle time.

4. 4

   Explain the steps you would follow to design a simple bracket for an automotive application.

   Start with requirements (load, space, material), create a concept, perform basic stress analysis, choose material (e.g., steel or aluminum), detail design with GD&T, and validate via FEA or prototype testing. Mention DFMA and cost.

Practical Scenarios

1. 5

   During assembly, you find that a shaft does not fit into a hole. How would you investigate and resolve this?

   A strong answer suggests checking actual dimensions against drawing tolerances, reviewing GD&T, inspecting for burrs or deformation, and verifying process capability. Propose corrective actions like adjusting tolerances or improving machining.

2. 6

   You are asked to reduce the cost of an existing component without compromising quality. What approach would you take?

   Consider material substitution, design simplification, reducing number of parts, optimizing tolerances, or changing manufacturing process. Emphasize validation through testing and cost-benefit analysis.

3. 7

   How would you handle a situation where a design change is requested late in the production process?

   Assess impact on cost, timeline, and quality. Communicate with stakeholders, evaluate feasibility, and propose a change control process. Suggest documenting the change and updating drawings and BOM.

4. 8

   If you are unsure about a design decision, what steps would you take before finalizing it?

   Consult senior engineers, refer to standards and handbooks, perform calculations or simulations, and possibly create a prototype. Emphasize collaboration and validation.

Behavioural and HR

1. 9

   Tell me about a time you worked in a team to complete a project. What was your role?

   Use STAR method. Highlight your contribution, how you collaborated, and the outcome. Emphasize communication and adaptability.

2. 10

   Why do you want to join the manufacturing and automobile sector, and specifically a company like Endurance Technologies?

   Show passion for automobiles or manufacturing, mention the company's reputation and products, and align your skills with their needs. Avoid generic answers.

3. 11

   Describe a situation where you faced a technical challenge and how you overcame it.

   Pick a project or internship example. Explain the problem, your approach (research, experimentation, seeking help), and the result. Highlight learning and persistence.

4. 12

   Where do you see yourself in five years?

   Show ambition to grow into a senior design or leadership role, contributing to innovative products. Mention continuous learning and taking on more responsibility.

CAD and Software Proficiency

1. 13

   Which CAD software are you most comfortable with, and what kind of models have you created?

   Name specific software (e.g., SolidWorks, CATIA) and describe projects like part modeling, assemblies, or sheet metal. Mention any certifications or coursework.

2. 14

   How do you ensure your CAD models are manufacturable?

   Talk about design for manufacturing principles, considering tolerances, material, and process capabilities. Mention using CAD tools for draft analysis, thickness check, and interference detection.

3. 15

   What is the difference between a part and an assembly in CAD? How do you manage constraints?

   Explain that a part is a single component, while an assembly combines multiple parts with mates. Discuss using mates like coincident, concentric, and distance to simulate real-world joints.

4. 16

   How would you create a detailed drawing from a 3D model, and what information should it include?

   Mention generating views (orthographic, section, detail), adding dimensions with GD&T, title block, BOM, and notes. Emphasize clarity and adherence to standards.