In this study, thread forming performance is evaluated under cyclic heating and cooling of tapped lightweight multimaterial joints in which steel self-tapping screws are used. Joint performance is assessed in terms of residual torque, pullout strength, load transfer capacity (LTC), and failure mode. Cyclic temperature fluctuates between 130 °C and −20 °C in a computer-controlled environmental chamber. Joint coupon materials are steel and Nylon polymeric material. Data analysis and discussion are provided. Analysis of experimental data provides a useful insight into design optimization of self-tapped joints.

References

References
1.
Lackey
,
E.
,
Vaughan
,
J. G.
, and
Frazier
,
M.
,
2000
, “
Experimental Examination of the Use of Self-Tapping Screws for Mechanical Attachments to Polymeric Composite Materials
,”
32nd International SAMPE Technical Conference
, pp.
484
497
.
2.
Lackey
,
E.
,
Vaughan
,
J. G.
, and
Frazier
,
M.
,
2003
, “
Experimental Examination of Static Loading of Self-Tapping Screws Used for Mechanical Attachments to Composite Sandwich Materials
,”
J. Adv. Mater.
,
35
(
4
), pp.
48
56
.
3.
Grant
,
L. D. R.
,
Adams
,
R. D.
, and
da Silva
,
L. F.
,
2009
, “
Experimental and Numerical Analysis of Single-Lap Joints for the Automotive Industry
,”
Int. J. Adhes. Adhes.
,
29
(
4
), pp.
405
413
.
4.
Wu
,
Z.
,
Diab
,
M.
, and
Nassar
,
S. A.
,
2015
, “
Effect of Elevated Temperature on Adhesively Bonded Lightweight Material Single Lap Joints
,” American Society of Composites—30th Technical Conference, Lansing, MI.
5.
Logan
,
S.
,
Kizyma
,
A.
,
Patterson
,
C.
, and
Rama
,
S.
,
2006
, “
Lightweight Magnesium Intensive Body Structure
,”
SAE
Paper No. 2006-01-0523.
6.
Mills
,
A.
,
Frost
,
M.
, and
Castanos
,
A.
,
2002
, “
Development of a Carbon Fibre Composite Ultra Lightweight Vehicle Structure for the Aero-Stable Carbon Car-Fastframes
,”
SAE
Paper No. 2002-01-1121.
7.
Sieber
,
M.
,
Scharf
,
I.
,
Härtel
,
M.
,
Hellmig
,
R. J.
, and
Lampke
,
T.
,
2012
, “
Influence of Anodic Oxide Coatings on Screwing Behaviour and Susceptibility to Stress Corrosion Cracking of Self-Tapping Aluminum Screws
,”
Materwiss. Werkstofftech.
,
43
(
7
), pp.
661
667
.
8.
Grossberndt
,
H.
, and
Ociepka
,
K.
,
1979
, “
Self-Tapping Screws for Thermoplastics—Thread Profiles and Screw-in Tubes
,”
Kunstst. German Plast.
,
69
(
6
), pp.
22
24
.
9.
Goss
,
D. C.
,
1999
, “
Thread Forming Fasteners for Tapping and Fastening Into Magnesium Alloys
,”
SAE
Paper No. 1999-01-0923.
10.
Claus
,
L.
, and
Weitzel
,
S.
,
2014
, “
Self-Tapping Fasteners for Lightweight Designs
,”
SAE
Paper No. 2014-01-0785.
11.
Skovron
,
J. D.
,
Prasad
,
R. R.
,
Ulutan
,
D.
,
Mears
,
L.
,
Detwiler
,
D.
,
Paolini
,
D.
, and
Claus
,
L.
,
2015
, “
Effect of Thermal Assistance on the Joint Quality of Al6063-T5A During Flow Drill Screwdriving
,”
ASME J. Manuf. Sci. Eng.
,
137
(
5
), p.
051019
.
12.
Wu
,
Z.
,
Nassar
,
S. A.
, and
Yang
,
X.
,
2015
, “
Axial Fatigue Performance of Medical Screws in Synthetic Bone
,”
Int. J. Biomed. Eng. Technol.
,
17
(
2
), pp.
192
207
.
13.
Wu
,
Z.
,
Nassar
,
S. A.
, and
Yang
,
X.
,
2014
, “
Nonlinear Deformation Behavior of Bolted Flanges Under Tensile, Torsional, and Bending Loads
,”
ASME J. Pressure Vessel Technol.
,
136
(
6
), p.
061201
.
14.
Wu
,
Z.
,
Wang
,
J.
,
Nassar
,
S.
,
Li
,
M.
,
Li
,
Y.
,
Shah
,
J.
,
Yang
,
X.
, and
Dai
,
K.
,
2012
In Vitro Study of Axial Pullout of Pedicle Screws
,”
J. Med. Biomech.
,
27
(
Suppl
), pp.
73
74
.
15.
Kagan
,
V. A.
, and
Weitzel
,
S. P.
,
2002
, “
New Developments in Mechanical Fastening of Thermoplastics: Aluminum Self-Tapping Screws Trump Steel
,”
SAE
Paper No. 2002-01-0720.
16.
Kagan
,
V. A.
, and
Weitzel
,
S. P.
,
2002
, “
Smart Structure and Integrated System: Reinforced Nylon and Aluminum Self-Tapping Screws
,”
SAE
Paper No. 2002-01-2030.
17.
Ngemoh
,
F. A.
,
1997
, “
Modeling the Automated Screw Insertion Process
,” Ph.D. thesis, King's College, University of London.
18.
Seneviratne
,
L. D.
,
Ngemoh
,
F. A.
,
Earles
,
S. W. E.
, and
Althoefer
,
K. A.
,
2001
, “
Theoretical Modelling of the Self-Tapping Screw Fastening Process
,”
Proc. Inst. Mech. Eng., Part C
,
215
(
2
), pp.
135
154
.
19.
Vangipuram
,
R.
,
Valasin
,
A.
, and
Squires
,
R.
,
2007
, “
Torque Angle Signature Analysis of Joints With Thread Rolling Screws and Unthreaded Weld Nuts
,”
SAE
Paper No. 2007-01-1665.
20.
Althoefer
,
K.
,
Lara
,
B.
, and
Seneviratne
,
L. D.
,
2005
, “
Monitoring of Self-Tapping Screw Fastenings Using Artificial Neural Networks
,”
ASME J. Manuf. Sci. Eng.
,
127
(
1
), pp.
236
243
.
21.
Mathurin
,
F.
,
Guillot
,
J.
,
Stéphan
,
P.
, and
Daidié
,
A.
,
2009
, “
3D Finite Element Modeling of an Assembly Process With Thread Forming Screw
,”
ASME J. Manuf. Sci. Eng.
,
131
(
4
), p.
041015
.
You do not currently have access to this content.