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A “Toolbox” for Forensic Engineers

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Index 437<br />

Statistical process control, 13<br />

Steel<br />

anomalous properties of, 42<br />

carbon content of, 145–146<br />

case hardening of, 145<br />

casting shrinkage, 32–33<br />

composition of, 145<br />

ductile-brittle transition temperature,<br />

42–43<br />

heat treatment of, 32, 145<br />

S-N curves <strong>for</strong>, 49<br />

stainless, See Stainless steel<br />

zinc plating of, 157<br />

Steering arm failure, 320–327<br />

Stepladder, 62–66<br />

Storage tank failure<br />

aftermath of, 250–251<br />

background, 241–242<br />

incidences of, 252–253<br />

material evidence of, 243–245<br />

material testing, 247<br />

subcritical cracks, 245–247<br />

tank structure, 248–250<br />

weld defects, 245–248<br />

Storage vessel failure<br />

bathtubs, 236–239<br />

battery case, 228–236<br />

consequences of, 215<br />

galvanized tank leak, 216–218<br />

overview of, 215–216<br />

plastic materials, 216<br />

radiator, 218–227<br />

storage tanks, See Storage tank failure<br />

underground storage tanks, 239–241<br />

Stress corrosion, 34<br />

Stress corrosion cracking<br />

description of, 55–57<br />

diesel fuel pipe connector, 199–205<br />

plastic materials, 192<br />

stainless steel example of, 184<br />

Sulfuric acid, 202<br />

Surgical tweezer failure<br />

in-plane cracking, 307–310<br />

titanium ophthalmic, 310–313<br />

T<br />

Tensile strength<br />

definition of, 35<br />

<strong>for</strong>ce-extension curves, 36–37<br />

fracture stress vs., 38<br />

Vickers hardness test and, 109–111<br />

Tensile testing, 105–106<br />

Tetramethyl silane, 128<br />

Thermal analysis<br />

chromatography, 126–127<br />

differential scanning calorimetry,<br />

121–124<br />

infrared spectroscopy, 124–126<br />

integrity of, 127–128<br />

reproducibility of results, 127–128<br />

Thermoplastic materials<br />

battery cases composed of, 228<br />

brittle, 41–42<br />

creep of, 59<br />

crystalline structure of, 40<br />

fracture paths in, 41–42<br />

load-bearing applications, 40–41<br />

overloading of, 39–40<br />

standards <strong>for</strong>, 250<br />

storage tanks, 252–253<br />

Threaded iron pipe coupling failure,<br />

151–152<br />

Thread failures, 189<br />

Titanium<br />

corrosion resistance, 55<br />

elastic modulus of, 296<br />

femoral stem of hip joint prosthesis,<br />

295–296<br />

surgical tweezers, 310–313<br />

Torsional fractures, 51–52<br />

Torsional overstress, 329<br />

Torsion testing, 113–115<br />

Total quality management, 7<br />

Tow hitch failure<br />

description of, 340<br />

tow bolt fatigue, 344–347<br />

trailer accident caused by, 340–344<br />

TPE catheter fracture, 297–298<br />

Traumatic failure, 131–132<br />

Trucks<br />

replacement gear failure in, 152–155<br />

steering arm failure in, 320–327<br />

Tungsten, 336<br />

Tweezer failure<br />

in-plane cracking, 307–310<br />

titanium ophthalmic, 310–313

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