Quest Global Design Engineer Interview Questions and Answers

Sheet metal size refers to the dimensions and thickness of metal sheets used in manufacturing and fabrication processes.

• Common sizes include 4x8 feet and 5x10 feet sheets.

• Thickness is measured in gauge; for example, 16 gauge is about 0.0598 inches thick.

• Standard sizes may vary by region and material type, such as aluminum or steel.

• Custom sizes can be ordered for specific applications, like HVAC ductwork.

To draw sheet metal, use CAD software to create a 2D flat pattern of the desired shape, including bend allowances and tolerances.

• Start by creating a 2D sketch of the desired shape in the CAD software.

• Apply bend allowances and tolerances to account for the material thickness and bending process.

• Use features like flanges, bends, and reliefs to accurately represent the sheet metal design.

• Verify the flat pattern for a...read more

Designing a composite product involves selecting materials, creating a layout, analyzing performance, and optimizing for strength and weight.

• Select appropriate materials based on desired properties (strength, weight, durability)

• Create a layout or design based on the specific requirements and constraints

• Perform analysis using software tools to predict performance under different conditions

• Optimize the design for st...read more

Blade manufacturing process involves forging, machining, heat treatment, and finishing to create high-quality blades.

• Blades are typically made from materials like stainless steel, carbon steel, or titanium.

• Forging involves shaping the blade by heating and hammering the metal into the desired shape.

• Machining is used to refine the blade's shape and dimensions using precision cutting tools.

• Heat treatment is crucial t...read more

Different approaches for manufacturing composites include hand lay-up, filament winding, and resin transfer molding.

• Hand lay-up involves manually placing layers of reinforcement material in a mold and applying resin.

• Filament winding uses continuous fibers that are wound around a rotating mandrel to create a composite structure.

• Resin transfer molding involves injecting resin into a closed mold containing pre-placed...read more

Design tools include CAD software, 3D printers, prototyping equipment, and simulation software.

• CAD software such as SolidWorks, AutoCAD, and CATIA are used for creating 2D and 3D designs

• 3D printers are used for rapid prototyping and creating physical models

• Prototyping equipment such as CNC machines and laser cutters are used for creating functional prototypes

• Simulation software such as ANSYS and COMSOL are used fo...read more

Iron-Carbon Diagram shows the phases of iron and carbon at different temperatures.

• Graphical representation of the phases of iron and carbon at different temperatures

• Helps in understanding the microstructure of steel

• Consists of regions like austenite, ferrite, cementite, and pearlite

• Used in heat treatment processes to control the properties of steel

The K factor of sheet metal is a constant used in sheet metal bending calculations to determine the amount of material elongation and compression.

• The K factor is influenced by the material's properties, thickness, and bending method.

• It is used to calculate the bend allowance, bend deduction, and flat pattern dimensions.

• A higher K factor indicates more material elongation and compression during bending.

• Common K fac...read more