Part Two Residual Stress Data
1. Q235B
Test method: Blind hole
|
Specimen style |
X direction
sres-X (MPa) |
Y direction
sres-Y (MPa) |
Max main stress
smax (MPa) |
Min main stress
smin (MPa) |
Main stress direction |
|
Q235B Butt-joint |
-219.4 |
-241.7 |
-242 |
-219 |
7.1 |
|
Q235B Cruciform-joint，R=-0.5 |
-235.1 |
-256.9 |
-257 |
-235 |
3.2 |
|
Q235B Cruciform-joint，R=0.25 |
-271.1 |
-282.9 |
-283 |
-271 |
4.6 |
|
16Mn |
-312.4 |
-340.6 |
-341 |
-312 |
6.9 |
Data resource: Tianjin University welding engineering research center
2. Q345(80mmdeep butt-joint seam)
Test method: Blind hole
|
Comparison of unpenetrated hidden arc welding before and after UIT |
|
Residual stress(σ/MPa) |
Before UIT |
After UIT |
After full covered UIT |
|
σmax |
339 |
276 |
224 |
|
σmin |
109 |
60 |
38 |
|
τ |
115 |
108 |
93 |
|
σx |
332 |
265 |
194 |
|
σy |
116 |
71 |
68 |
|
Comparison of penetrated hidden arc welding before and after UIT |
|
残余应力(σ/MPa) |
冲击前 |
全覆盖冲击后 |
|
σmax |
238 |
107 |
|
σmin |
50 |
27 |
|
τ |
94 |
40 |
|
σx |
190 |
104 |
|
σy |
98 |
30 |
Annotate:
(1). Results come from a depth of 2 to 4mm。.
(2). UIT can form a compression stress layer on the surface of the seam(usually less than 3mm deep).UIT can disperse tensile stress to some extent. When it is used to full impact the seam, it can achieve a goal of 34% to 55% stress-off at a depth from 2 to 4mm.
(3). UIT can even reduce the residual tensile stress in nearby areas without UIT by 20%.
3. 45# steel
Test method: XRD
|
Depth
(mm) |
X direction stress(MPa) |
Y direction stress(MPa) |
Depth
(mm) |
X direction stress (MPa) |
Y direction stress (MPa) |
|
0 |
-523 |
-457 |
0.55 |
-235 |
-213 |
|
0.01 |
-487 |
-424 |
0.60 |
-241 |
-228 |
|
0.02 |
-498 |
-409 |
0.65 |
-200 |
-240 |
|
0.03 |
-435 |
-430 |
0.7 |
-207 |
-249 |
|
0.04 |
-453 |
-430 |
0.75 |
-208 |
-218 |
|
0.05 |
-438 |
-430 |
0.8 |
-171 |
-162 |
|
0.07 |
-419 |
-393 |
0.85 |
-200 |
-181 |
|
0.09 |
-390 |
-331 |
0.9 |
-174 |
-186 |
|
0.11 |
-293 |
-330 |
0.95 |
-204 |
-180 |
|
0.13 |
-316 |
-259 |
1.0 |
-198 |
-229 |
|
0.15 |
-281 |
-272 |
1.1 |
-174 |
-163 |
|
0.18 |
-217 |
-266 |
1.2 |
-166 |
-176 |
|
0.22 |
-252 |
-233 |
1.3 |
-113 |
-143 |
|
0.26 |
-182 |
-218 |
1.4 |
-91 |
-74 |
|
0.31 |
-232 |
-230 |
1.5 |
-61 |
-9 |
|
0.36 |
-215 |
-242 |
1.6 |
-16 |
-60 |
|
0.41 |
-189 |
-241 |
1.7 |
-20 |
6 |
|
0.45 |
-209 |
-229 |
1.9 |
37 |
40 |
|
0.5 |
-223 |
-200 |
|
|
|
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4.
4.Cr18Ni9 Ti
Test method: blind hole
|
Deformation before and after UIT |
|
No. |
Direction |
Before UIT |
After UIT |
|
1 |
ε1 |
-114×10-6 |
-4×10-6 |
|
ε2 |
-41×10-6 |
-14×10-6 |
|
ε3 |
-22×10-6 |
3×10-6 |
|
2 |
ε1 |
-62×10-6 |
14×10-6 |
|
ε2 |
-50×10-6 |
30×10-6 |
|
ε3 |
-32×10-6 |
21×10-6 |
|
Calculated results before and after UIT |
|
No. |
Before UIT |
After UIT |
|
σmax |
σmin |
β |
σmax |
σmin |
β |
|
/MPa |
/MPa |
(〃) |
/MPa |
/MPa |
(〃) |
|
1<, /SPAN> |
131 |
57 |
-0.27 |
11 |
-10 |
-0.67 |
|
2 |
76 |
55 |
0.10 |
-15 |
-33 |
-0.65 |
Data resource: Tianjin University welding engineering research center
5. TA2 alloy(Flat plate butt joint)
Test method: Drilling residual stress test method.
|
No.1 plate test result(UIT) |
|
No. |
Distance from seam center |
ε/10-6 |
σ/MPa |
θ/° |
|
/mm |
ε1 |
ε2 |
ε3 |
σmax |
σmin |
σx |
σy |
|
1 |
-18.0 |
-62.0 |
-69.0 |
-85.0 |
39.8 |
33.5 |
33.7 |
39.6 |
-10.7 |
|
2 |
-12.0 |
-31.0 |
-67.0 |
-51.0 |
27.6 |
13.3 |
17.9 |
23.0 |
34.5 |
|
3 |
-6.0 |
-413.0 |
-232.0 |
162.0 |
141.3 |
-16.2 |
136.4 |
-11.3 |
-10.2 |
|
4 |
0.0 |
-370.0 |
-169.0 |
12.0 |
138.4 |
40.1 |
138.3 |
40.2 |
1.5 |
|
5 |
6.0 |
-230.0 |
-89.0 |
165.0 |
69.0 |
-36.6 |
66.9 |
-34.5 |
-8.0 |
|
6 |
12.0 |
-153.0 |
-82.0 |
-46.0 |
64.1 |
35.1 |
63.3 |
35.9 |
9.1 |
|
7 |
18.0 |
-5.0 |
-32.0 |
-112.0 |
44.5 |
13.8 |
15.4 |
42.9 |
-13.2 |
|
No.2 plate test result(As welded) |
|
No. |
Distance from seam center |
ε/10-6 |
σ/MPa |
θ/° |
|
/mm |
ε1 |
ε2 |
ε3 |
σmax |
σmin |
σx |
σy |
|
1 |
-18.0 |
-64.0 |
-38.0 |
-163.0 |
79.8 |
33.4 |
43.9 |
69.3 |
-28.4 |
|
2 |
-12.0 |
-241.0 |
-139.0 |
-85.0 |
102.2 |
60.3 |
101.3 |
61.2 |
8.6 |
|
3 |
-6.0 |
-1193.0 |
-312.0 |
195.0 |
433.4 |
64.1 |
427.1 |
70.4 |
7.5 |
|
4 |
0.0 |
-1213.0 |
-522.0 |
151.0 |
440.0 |
89.5 |
439.9 |
89.5 |
0.4 |
|
5 |
6.0 |
-971.0 |
-432.0 |
212.0 |
341.8 |
36.6 |
341.2 |
37.2 |
-2.5 |
|
6 |
12.0 |
-391.0 |
-172.0 |
-77.0 |
160.0 |
73.3 |
157.0 |
76.3 |
10.8 |
|
7 |
18.0 |
21.0 |
-112.0 |
-181.0 |
67.1 |
12.7 |
13.9 |
65.8 |
8.8 |
Data resource: Luoyang ship material research center
6. Ti75 alloy(Flat plate butt joint)
Test method: Drilling residual stress test mothed
|
No.1 plate result(UIT) |
|
No. |
Distance from seam center |
ε/10-6 |
σ/MPa |
θ/° |
|
/mm |
ε1 |
ε2 |
ε3 |
σmax |
σmin |
σx |
σy |
|
1 |
-18.0 |
-71.0 |
-61.0 |
-92.0 |
46.5 |
34.7 |
37.9 |
43.3 |
-31.4 |
|
2 |
-12.0 |
-229.0 |
-101.0 |
5.0 |
86.0 |
25.6 |
85.9 |
25.8 |
2.7 |
|
3 |
-6.0 |
-293.0 |
-201.0 |
-11.0 |
114.1 |
37.4 |
112.0 |
39.5 |
-9.6 |
|
4 |
0.0 |
-282.0 |
-137.0 |
53.0 |
100.5 |
13.7 |
100.1 |
14.0 |
-3.8 |
|
5 |
6.0 |
-218.0 |
-59.0 |
102.0 |
70.0 |
-12.2 |
70.0 |
-12.2 |
-0.2 |
|
6 |
12.0 |
-192.0 |
-88.0 |
13.0 |
71.0 |
18.3 |
71.0 |
18.3 |
0.4 |
|
7 |
18.0 |
-102.0 |
-84.0 |
-22.0 |
42.6 |
19.2 |
41.2 |
20.6 |
-14.4 |
|
No.2 plate result(As welded) |
|
No. |
Distance from seam center |
ε/10-6 |
σ/MPa |
θ/° |
|
/mm |
ε1 |
ε2 |
ε3 |
σmax |
σmin |
σx |
σy |
|
1 |
-18.0 |
-215.0 |
-179.0 |
-146.0 |
98.9 |
81.8-1 |
98.8 |
81.1 |
1.2 |
|
2 |
-12.0 |
-581.0 |
-269.0 |
33.0 |
215.5 |
57.7 |
215.5 |
57.7 |
0.5 |
|
3 |
-6.0 |
-816.0 |
-355.0 |
-98.0 |
322.5 |
131.7 |
318.9 |
135.2 |
7.9 |
|
4 |
0.0 |
-582.0 |
-376.0 |
-132.0 |
236.0 |
119.9 |
235.8 |
120.2 |
-2.4 |
|
5 |
6.0 |
-639.0 |
-337.0 |
-9.0 |
242.5 |
80.5 |
242.5 |
80.6 |
-1.2 |
|
6 |
12.0 |
-680.0 |
-324.0 |
-3.0 |
257.3 |
83.1 |
257.2 |
83.3 |
1.5 |
|
7 |
18.0 |
-199.0 |
-125.0 |
-143.0 |
99.1 |
71.4 |
92.4 |
78.1 |
29.3 |
Data resource: Luoyang ship material research center
|
