PLTW Engineering Design Midterm Review 2024-2025

Linear Measurement - Metric

Measurement system using meters and centimeters.

Linear Measurement - US

Measurement system using inches and feet.

Unit Conversion

Changing measurements from one unit to another.

Using a Ruler

Tool for measuring length in linear dimensions.

Using a Dial Caliper

Precision tool for measuring internal and external dimensions.

Linear Dimensions

Measurements that define the size of an object.

Identifying Technical Drafts

Recognizing drawings that convey engineering specifications.

Common Practices

Standard methods used in engineering design.

Rules of Dimensioning

Guidelines for accurately representing dimensions on drawings.

Statistical Analysis

Methods for interpreting and summarizing data.

Mean

Average value calculated from a data set.

Median

Middle value in a sorted data set.

Mode

Most frequently occurring value in a data set.

Standard Deviation

Measure of data dispersion around the mean.

Histograms

Graphical representation of data distribution.

Fit Types

Classification of how parts fit together.

Fasteners

Components used to join materials together.

Adhesives

Substances used to bond materials chemically.

Snapfit Joints

Interlocking joints that allow quick assembly.

Threads

Spiral ridges used for fastening components.

Wood Joints

Connections between wooden pieces in construction.

Tolerances

Permissible limits of variation in a dimension.

Limit Tolerance

Specified maximum and minimum dimensions allowed.

Unilateral Tolerance

Variation allowed in one direction from nominal size.

Bilateral Tolerance

Variation allowed in both directions from nominal size.

Clearance Fit

Space between parts allowing easy assembly.

Interference Fit

Overlap between parts requiring force for assembly.

Reverse Engineering

Analyzing a product to understand its design.

Visual Principles

Fundamental guidelines for effective design communication.

Elements of Design

Basic components used in creating visual designs.

Design Process

Steps taken to develop a solution to a problem.

Define the Problem

Identifying the issue that needs resolution.

Brainstorm Ideas

Generating a wide range of potential solutions.

Research and Generate Ideas

Investigating existing solutions to inspire new ideas.

Identify Criteria

Establishing standards for evaluating design solutions.

Select an Approach

Choosing the best method to solve the problem.

Make a Prototype

Creating a preliminary model of the design.

Test and Evaluate

Assessing the prototype's performance against criteria.

Refine the Design

Improving the design based on testing feedback.

Communicate Ideas

Sharing design concepts with stakeholders.

Concept Sketching

Drawing initial ideas to visualize design concepts.

Invention Vs Innovation

Creating new ideas versus improving existing ones.

Isometric Sketching

3D representation with equal angles.

Perspective Sketching

3D representation showing depth and distance.

Multiview Sketching

Multiple views to represent an object accurately.

Oblique Pictorial

3D view with one face shown in true shape.

Section Views

Cutaway drawings showing internal features.