Internal Pressure given Plate Thickness Calculator

Internal Pressure Formula:

\[ P_i = \frac{p_t}{\left(\frac{r}{\sigma_{tp} \times \eta}\right)} \]

Plate Thickness:

Pipe Radius:

Permissible Tensile Stress:

Joint Efficiency:

Tolerance:

±%

Internal Pressure (Pa):

1. What is Internal Pressure given Plate Thickness Calculator?

Definition: This calculator determines the internal pressure a pipe can withstand based on plate thickness, pipe radius, material stress limits, and joint efficiency.

Purpose: It helps engineers design pipes and pressure vessels that can safely contain fluids under pressure.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_i = \frac{p_t}{\left(\frac{r}{\sigma_{tp} \times \eta}\right)} \]

Where:

\( P_i \) — Internal pressure (Pascals)
\( p_t \) — Plate thickness (mm)
\( r \) — Pipe radius (mm)
\( \sigma_{tp} \) — Permissible tensile stress (Pa)
\( \eta \) — Joint efficiency (decimal, 0-1)

Explanation: The formula calculates the maximum internal pressure based on material strength and geometric factors.

3. Importance of Pressure Calculation

Details: Proper pressure calculation ensures structural integrity, prevents failures, and meets safety standards for pressurized systems.

4. Using the Calculator

Tips: Enter plate thickness, pipe radius, permissible stress, joint efficiency (default 85%), and tolerance (default ±5%). All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is joint efficiency?
A: A factor (0-1) that accounts for weld quality, with 1 being a perfect joint and lower values for less efficient joints.

Q2: Why include tolerance?
A: Tolerance accounts for material variations, manufacturing imperfections, and safety margins.

Q3: What are typical joint efficiency values?
A: 0.85 for welded joints, 0.7 for riveted joints, and 1.0 for seamless pipes.

Q4: How does radius affect pressure capacity?
A: Larger radius pipes require thicker walls to withstand the same pressure.

Q5: What safety factors should I consider?
A: Always apply appropriate safety factors beyond calculated values for real-world applications.