Terms: Spallation Drilling (876), spallation cutting (0), spallation milling (0), spallation shaping (0), spallation carving (0), spalling of rock (181), spalling of granite (45),
Terms: spallation (701,000), spalling (648,000), spall (2,710,000), spalls (151,000),
http://jetstik.com/Videos/Action.html
Musings from the Coast » Blog Archive » Spallation Drilling
Terms: hydrothermal spallation (613),
http://www.potterdrilling.com/technology/explained/ - 50 feet per hour in solid granite. Uses hot pressurized water. Combines waterjet and thermal fracture and chemical solution (water in fractures).
Terms: contact stress fatigue (38), thermal spalling (1,330), thermal spallation (254),
Boolean: granite +"tensile strength" (102,000), marble +"tensile strength" (108,000), granite +"speed of sound" (25,800), marble +"speed of sound" (33,500), granite +"thermal conductivity" (48,300), marble +"thermal conductivity" (38,300),
Boolean: chipping +glass (52,700,000), chipping +ceramic (11,700,000), glass +fracture (3,160,000), ceramic +fracture (1,680,000),
Boolean: glass +spallation (51,900), glass +shattering (2,970,000), glass +brittle (3,470,000),
Terms: micromechanics (2,430,000), failure waves (586), failure front (14,700), shear stress (1,840,000), stress rate (44,000),
Terms: truesdell stress rate (52), cauchy stress (539,000), objective stress rates (272), kirchhoff stress (16,200), jaumann rate (792), green naghdi (2,380),
Continuum mechanics/Objective stress rates - oscillations in jaumann rate considered bad
Boolean: granite +"equation of state" (3,060), granite +compressibility (28,200), marble +compressibility (12,900), granite +"adiabatic compressibility" (12), marble +"adiabatic compressibility" (13),
Terms: fractures in marble (29), fracture * marble (138), fracture * * marble (344), marble fracture (56), marble * fracture (168), marble * * fracture (79),
Terms: fracture resistance (99,100), toughness (15,900,000), strength (580,000,000), fracture toughness (623,000), brittle fracture (204,000), conchoid fracture (22), conchoid (34,400),
Terms: fracture field (467), 3d fracture (5,060),
Terms: split (483,000,000), crack (347,000,000), splitting (55,600,000), cracking (77,400,000), failure (569,000,000), failing (182,000,000), cracked (144,000,000),
Terms: weibull graph (275), weibull graphs (92), weibull statistical (1,520), accelerated life testing (114,000), testing (943,000,000), reliability (758,000,000), mean time before failure (133,000), mean time between failures (515,000),
NIST Ceramics Division - Characterization of Fracture Origins
Anisotropic dynamic elastic properties of Triassic Milas marbles from Mugla region in Turkey
(6.78 km/s)^2 = 45.9684E6 J/kg
2716 (kg/m3)*(6700 m/s)^2 = 1.2192124E11 Joule/m3 (adiabatic compressibility)
32.28 Newton/mm2 = 3.228E7 Pascal
167.75 N/mm2 = 1.6775E8 N/m2 = 1.6775E8 Pa
300 MPa = 3E8 Pa
Terms: adiabatic compressibility (11,200),
Marble Institute of America - Technical Bulletins - 1 square meter of material in a thickness of 1 meter will transfer heat at a rate of k watts for every degree Kelvin of temperature difference between opposite faces.
| Material Type | k-Value (Thermal Conductivity) (W/meter*K) |
R-Value Equivalent (R)3 (Hr • ft2 • ºF / Btu) |
| Granite (High Value)1 | 1.73 | 0.083 |
| Granite (Low Value)1 | 3.98 | 0.038 |
| Granite (Barre)2 | 2.79 | 0.052 |
| Limestone (High Value)1 | 1.26 | 0.114 |
| Limestone (Low Value)1 | 1.33 | 0.108 |
| Limestone (Salem)2 | 2.15 | 0.067 |
| Marble (High Value)1 | 2.07 | 0.070 |
| Marble (Low Value)1 | 2.94 | 0.049 |
| Marble (Halston)1 | 2.80 | 0.051 |
| Sandstone (High Value)1 |
1.83 | 0.079 |
| Sandstone (Low Value - Berea)2 |
2.90 | 0.050 |
| Quartzite (Sioux)1 | 5.38 | 0.027 |
Thermal Shock Fracture Behaviors of Functionally Graded Ceramics - pdf
Terms: thermal fracture (2,930), thermal stress (970,000), thermal shock (1,480,000), critical thermal shocks (2), fracture limit (3,850),
Terms: thermal stress (970,000), thermal stress intensity (722), tensile strength (7,040,000), thermal fracture behavior (54),
Terms: pulse stretch (1,620), pulse compression (159,000), nonlinear shock (1,480), nonlinear materials (48,000), nonlinear fracture (19,800),
Terms: stress wave (85,400), stress waves (64,300), rarefaction shocks (454), rarefaction shock (1,310), stress wave profile (20), stress wave profiles (81), stress pulses (1,440), pulse profiles (26,800), wave profiles (28,100), compressive stress pulse (209), compressive stress (366,000), temperature profile (961,000), displacement history (24,900),
Discovery of Glass-Modified Stress Waves with Rarefaction Shocks
Boolean: fracture +"temperature gradient" (48,800), fracture +"thermal gradient" (21,100), "tensile strength" +"temperature gradient" (17,200), "tensile strength" +spalling (32,600), "tensile strength" +spallation (2,250),
Terms: spallation times (2), spallation rate (60), laser spallation (847), laser induced spallation (116), laser * spallation (247), spallation laser (26), spallation * laser (37), acoustic spallation (0), ultrasonic spallation (2),
Terms: shear spallation (3), mechanical spalling (66), fracture formation (5,710), crack formation (104,000), crack propagation (554,000), mechanical weathering (57,900), brinelling (37,500), cavitation (2,550,000), peening (701,000),
Terms: freeze thaw (1,940,000), freeze thaw weathering (2,030), freeze thaw fracture (42), water jet (4,700,000), abrasive water jet (75,700), waterjet (2,990,000), abrasive waterjet (158,000),
Terms: stress wave (85,400), flame spallation (7),
Terms: rock spallation (75), spallation of brittle (3), spallation temperature (5),
Terms: flame rock cutting (0), flame jet cutting (267), flame cutting (380,000),
Boolean: granite +spallation (7,940), marble +spallation (801), compression +spallation (37,000), compression +spalling (66,800), stress +spallation (72,700), stress +spalling (113,000),