| BH —— 01:28:02 al
TT. i a
TR
3 p NN
3 E
4 N
hk BANS
El - \
=| fe
| Ri
[oe AA
|. \
eo A
= A
|e A
a NN
gb RR

Question

VIPSolutions · Accepted Answer

Let's break down the question:

**Question:**  
Determine the notch sensitivity for the specimen whose maximum stress in notched specimen is 250 MPa and stress in notch free specimen is 100 MPa. The theoretical stress concentration factor is given as 3.

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### Step 1: Find Experimental Stress Concentration Factor ($ K_t' $)

$$
K_t' = \frac{\text{Maximum stress in notched specimen}}{\text{Maximum stress in notch-free specimen}}
$$

$$
K_t' = \frac{250}{100} = 2.5
$$

---

### Step 2: Formula for Notch Sensitivity ($ q $)

$$
q = \frac{K_t' - 1}{K_t - 1}
$$
where $ K_t $ is the theoretical stress concentration factor.

Given:
- $ K_t' = 2.5 $
- $ K_t = 3 $

$$
q = \frac{2.5 - 1}{3 - 1} = \frac{1.5}{2} = 0.75
$$

---

### Step 3: Choose the Correct Option

- 0.80
- 1.2
- **0.75** (Correct answer)
- 0.5

---

**Final Answer:**  
> The notch sensitivity for the specimen is **0.75**.

✨ VIPSolutions

| BH —— 01:28:02 al TT. i a TR 3 p NN 3 E 4 N hk BANS El - \ =| fe | Ri [oe AA |. \ eo A = A |e A a NN gb RR

Question:

Final Answer:

📢 Instructions:

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