Forensic Engineering

. , . .

,

, ,

18.55 . 17 .. 2558 20 130 [1] ,

, , Forensic Engineering

1 2 1 2

3

3 TNT UFC 3-340-02 [2]

1 (

)

2 ()

150

150 2-RB9

2-RB9 RB6@250mm

75200 mm 150 mm

3 . 150150 mm, 75200 mm

4 (blast pressure) , , 4

4 blast pressure [2]

2kg of TNT

3kg of TNT

4kg of TNT

TNT 2 kg, 3kg 4 kg

5 TNT 2kg ,3kg 4kg 0.5m 1 2 ( 5) 3 kg TNT , ,

bare charge [3] . EOD - 2 pipe bomb blast pressure pipe bomb bare charge blast pressure bare charge 3 kg TNT

bare charge charge casing pipe bomb Crowley A. [4] blast pressure 2 pipe bomb bare charge pipe bomb 6 20-30 cm. 25 cm. TNT C4 1,630 1,600 kg/m3 [5] 3 , 4 5 1 3 , 4 5 TNT 2.17 kg, 3.64 kg 5.45 kg pipe bomb TNT bare charge [4] 1.38 kg, 2.37 kg 3.48 kg 2

pipe bomb (

)

1

(mm)

(mm) TNT C4

(kg) inch mm

3 80 88.7 3.2 2.17 2.13 4 100 113.9 3.6 3.64 3.58 5 125 140.6 5 5.45 5.35

2 TNT (inch)

TNT (kg)

bare charge

TNT (kg) 3 2.17 1.38 4 3.64 2.37 5 5.45 3.48

3 C4 (inch) C4

(kg)

bare charge

TNT (kg) 3 2.13 1.94 4 3.58 3.33 5 5.35 4.88

C4 TNT C4 TNT equivalency 1.37 TNT 1.37 kg blast pressure C4 1 kg C4 pipe bomb 3 , 4 5 2.13kg, 3.58 kg 5.35 kg ( 1) TNT 2.92 kg, 4.91 kg 7.33 kg TNT

bare charge TNT bare charge TNT C4 1.94 kg, 3.33 kg 4.88 kg 3 , 4 5 3 TNT 4 5 25 cm 6.07 kg ( 2.43 kg + 3.64 kg) bare charge TNT 2.37 kg 4 9.6 kg ( 4.15 kg + 5.45 kg) bare charge TNT 3.48 kg 5

C4 4 25 cm 6 kg ( 2.43 kg + 3.58 kg) bare charge TNT 3.33 kg 3 1. , 2. , 3.

4 [2] (kPa)

35 50% 100

205-275 50% 550

690-1,380 50% 900-1,240 1,380-1,724

UFC 3-340-02 [2] 4

ConWep (Conventional Weapons Effects) [6]

Time (ms)

Incid

ent b

last

pre

ssur

e (kP

a)

0 2 4 6 8 10 12 14 16 18-200

200

600

1000at distance 1.5 mat distance 2 mat distance 3 mat distance 4 m

at distance 5 mat distance 6 mat distance 7 m

7 1.5 m

7 m bare charge TNT 3 kg

7 blast pressure bare charge TNT 3 kg 1.5m, 2m, 3m, 4m, 5m, 6m 7m 1248 kPa, 659 kPa, 259 kPa, 137 kPa, 86 kPa, 60 kPa 46 kPa incident blast pressure 4 7 bare charge TNT 3 kg 8 2 2 3.45 3.45 8.5 [2] [6]

Distance (m)

Incid

ent b

last

pre

ssur

e (k

Pa)

0 3 6 9 12 15 18 21 24 27 300

400

800

1200

1.98 m

3.45 m

8.5 m

8

17 .. 58 ,

, , , (infrastructures)

, Protective Technology of Structures, Security and Protective Engineering, Disaster Mitigation and Management, Materials for Defense

1. ASTV 21 2558 23:31 . ( 22 2558 16:11 .)

2. UFC 3-340-02 (2008): Structures to Resist the Effects of Accidental Explosions

3. 20 2558 4. Crowley, A., The Effect of Munition Casing on

Reducing Blast Overpressure, Cranfield University 5. Explosive Effects and Applications (Shock Wave

and High Pressure Phenomena) by Jonas A. Zukas, William Walters

6. TM 5-855-1, Fundamentals of Protective Design for Conventional Weapons