Thickness of Plates given Load Carried by Single Fillet Lap Weld Calculator

Thickness of Plate Formula:

\[ t_{plate} = \frac{W}{0.707 \times \sigma_t \times L_{single}} \]

Load on Weld:

Tensile Stress:

Length of Single Fillet Lap Weld:

Tolerance:

Thickness of Plate (m):

Minimum Thickness (m):

Maximum Thickness (m):

1. What is Thickness of Plates given Load Carried by Single Fillet Lap Weld?

Definition: This calculator determines the required thickness of plates based on the load carried by a single fillet lap weld, tensile stress, and weld length.

Purpose: It helps engineers and welders ensure proper plate thickness for given welding parameters to maintain structural integrity.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ t_{plate} = \frac{W}{0.707 \times \sigma_t \times L_{single}} \]

Where:

\( t_{plate} \) — Thickness of plate (meters)
\( W \) — Load on weld (Newtons)
\( \sigma_t \) — Tensile stress (Pascals)
\( L_{single} \) — Length of single fillet lap weld (meters)

Explanation: The load is divided by the product of 0.707 (factor for fillet weld), tensile stress, and weld length to determine the required plate thickness.

3. Importance of Plate Thickness Calculation

Details: Proper thickness calculation ensures weld strength matches the applied load, preventing failure due to insufficient material thickness.

4. Using the Calculator

Tips: Enter the load in Newtons, tensile stress in Pascals (default 32,000,000 Pa for mild steel), weld length in meters, and tolerance percentage (default ±5%).

5. Frequently Asked Questions (FAQ)

Q1: What is the 0.707 factor in the formula?
A: This accounts for the effective throat thickness of a 45° fillet weld (cos45° = 0.707).

Q2: What's a typical tensile stress value for mild steel?
A: About 32,000,000 Pa (32 MPa), but varies by material grade and condition.

Q3: How does tolerance affect the calculation?
A: It provides minimum and maximum thickness values accounting for manufacturing variations.

Q4: Can this be used for double fillet welds?
A: No, this is specifically for single fillet lap welds. Double fillet welds would use a different formula.

Q5: What units should I use for inputs?
A: All inputs should be in SI units - Newtons for load, Pascals for stress, and meters for length.