1. What is the Thickness Change Calculator?

Definition: The Thickness Change Calculator determines the percentage change in thickness of a wood board using the formula \( \frac{t_f - t_o}{t_o} \times 100 \), where \( t_f \) is the final thickness and \( t_o \) is the initial thickness.

Purpose: Assists in calculating the material removed during planing or any thickness adjustment.

Reference:Applied Strength of Materials for Engineering Technology

http://www.etcs.pfw.edu/~dupenb/ET_200/Applied%20Str%20of%20Mat%20for%20ET%20v14%20July%202018.pdf

2. How Does the Calculator Work?

Formula:

Where:

• \(t_f\): Final thickness
• \(t_o\): Initial thickness

Steps:

• Step 1: Input Initial Thickness. Enter the initial thickness (e.g., 50 mm).
• Step 2: Input Final Thickness. Enter the final thickness (e.g., 38 mm).
• Step 3: Calculate. The calculator computes the percent change.

3. Importance of Thickness Calculation

Calculating thickness change is crucial for:

• Material Planning: Ensures accurate material removal during processing.
• Quality Control: Verifies the final dimensions meet specifications.

4. Using the Calculator

Example: Initial Thickness = 50 mm, Final Thickness = 38 mm:

• Step 1: \( t_o = 50 \, \text{mm} \).
• Step 2: \( t_f = 38 \, \text{mm} \).
• Step 3: \(\frac{38 - 50}{50} \times 100 = -24\%\).

5. Frequently Asked Questions (FAQ)

Q: What does a negative percent change mean?
A: A negative value indicates a decrease in thickness.

Q: Why use percent change?
A: It provides a standardized measure of change relative to the initial value.