HMA Fatigue In FAARFIELD - Faa.gov
HMA Fatigue in FAARFIELDPresented to: REDACBy: Navneet Garg, Ph.D.Date: March 3, 2021Federal AviationAdministration
HMA Fatigue in FAARFIELD FAARFIELD is a computer program for airport pavementthickness design. FAA AC 150/5320-6F. Old HMA Fatigue Model: Heukelom & Klomp [1962]log10(C) 2.68 – 5 x log10(εh) – 2.665 x log10(EA)
AASHTO T321-14, Standard Method of Test for Determiningthe Fatigue Life of Compacted Asphalt Mixtures Subjected to Repeated Flexural Bending
1000000b J.5u Q4-.z"'d100000 "'di 310000a.Eo ·."'d p.av510001001001000100001000001000000Measured fatigue life, Nf fatigue data- - line of equalityAN ENERGY APPROACH FOR AIRPORT PAVEMENTLOW DAMAGE FATIGUE BEHAVIORBy:Shihui Shen and Samuel H, CarpenterCivil and Enviroomental Engineering DepanmentUniversity of Illinois al Urbana-ChampaignUtt ana, ll 61802USAPhone: (217) 244-6064; Fax: (217) 333-1924sshen2@uiuc-eduscarpent@uiuc.edu
(l)-8t,::;1.E-020.·-1.E-03r::/)on·-uµ.l1.E-04 §1.E-050VJ 0-."O.(.) ·-1.E-06"O I- 0-.1.E-071.E-07 1.E-061.E-05Plateau Value Data -1.E-041.E-031.E-02PV from original fatigue testAN ENERGY APPROACH FOR AIRPORT PAVEMENTLOW DAMAGE FATIGUE BEHAVIORline of equality !By:Shihui Shen and Samuel H. CarpenterCivil and Environmental Engineering DepartmentUnive rsity o f Illinois al Urbana-ChampaignUrbana, IL 61802USAPhone: (217) 244-6064; Fax: (217) 333-1924sshen2@ufuc-@duscarnent@uiuc.edu
HHMAFatigue in FAARFIELD New HMA Fatigue Model: Carpenter et.al. [1997, 2000, 2001, 2007]Nf 0.4801 x PV-0.9007PV 44.422 x εh5.14 x S2.993 x VP1.85 x GP-0.4063where PV is the estimated value of RDEC plateau value (dimensionless),S is HMA flexural stiffness (psi),εh is horizontal strain at the bottom of the asphalt layer,VP is the volumetric parameter, andGP is gradation parameter.IIPlateau Stage(AASHTO T321-14, Standard Method of Test for Determiningthe Fatigue Life of Compacted Asphalt Mixtures Subjected toRepeated Flexural Bending)Lo d CyclesIIINf
HMA Fatigue in FAARFIELDVP Va/(Va Vb)GP (PNMS-PPCS)/P200whereVa is air voids,Vb is asphalt content by volume,PNMS is the % of aggregate passing the nominal maximum size sieve,PPCS is the % of aggregate passing the primary control sieve, andP200 is the % of aggregate passing the #200 (0.075 mm) sieve.
CC7 – Perpetual Pavements1000900800.7000'T0.'5 600E "'., 500 ·C- ,;; 400., 300200100005,00010,00015,00020,000FAARFIELD Predicted Passes to Failure25,00030,00035,000
Pavement Cross Sections15 inch12 inch10 inch34 inch37 inch39 inchLFP-1NP401 HMASURFACELFP-2NLFP-3N8 inch5 inch8 inch5 inch8 inch41 inch29 inch29 inchLFP-4NLFC-5N DRAINABLEBASEP154 SUBBASEP209 CRUSHEDSTONE BASELFS-6N SUBGRADE(CBR 5-6)
Traffic Tests StandardStandard NAPTFNAPTF wanderwander pattern.pattern.43 & 4419 &201& 2-435 & 3617 & 18-351 & 5245 & 4621 & 223 &4-263 & 6465 & 6661 & 6259 & 6041 & 4253 & 5447 & 4823 & 245& 6057 & 5839 & 4031 & 3213 & 14133 & 3415 & 16.155 & 5649 & 5025 & 267 &8237 & 3829 &3011 & 12327 &289 & 1041372 mm 5555 kipskips (245(245 kN)kN) wheelwheel loadload 6-wheel6-wheel gear.gear.144144
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PREDICTED & OBSERVED FATIGUE LIFEPass to CoverageHMA StrainN 1 from FAARFIELDN1 from Full-Scale APTSection(from FAARFIELD)PV(P/C) 81l. 636422811814PassesI CoveragesRatio (N 1 APT/N1 FAARFIELDlNO CRACKS OBSERVEDII271522.90137373.25
HMA Fatigue in FAARFIELD FAARFIELD is a computer program for airport pavement thickness design. FAA AC 150/53
FAA-H-8083-3 Airplane Flying Handbook FAA-H-8083-6 Advanced Avionics Handbook FAA-H-8083-9 Aviation Instructor's Handbook FAA-H-8083-15 Instrument Flying Handbook FAA-H-8083-16 Instrument Procedures Handbook FAA-H-8083-25 Pilot's Handbook of Aeronautical Knowledge FAA-H-8083-30 Aviation Maintenance Technician Handbook— General FAA-H-8083 .
HIGHWAY DESIGN MANUAL 630-1 March 20, 2020 CHAPTER 630 FLEXIBLE PAVEMENT HMA: Topic 631 - Types of Flexible Pavements & Materials Index 631.1 - Hot Mix Asphalt (HMA) HMA consists of a mixture of asphalt binder and a graded aggregate ranging from coarse to very fine particles. HMA is classified by type depending on
HMA repairs may be performed on full depth HMA pavement or on composite pavement (HMA over concrete pavement). For full depth HMA pavement, sawcut existing HMA pavement to a depth of 8 inches. . Ensure that the micro-milled area is free from gouges, continuous grooves, ridges, and delaminated areas and has a uniform texture consisting of .
From: Vantrees, Stephen (FAA) stephen.vantrees@faa.gov Sent: Thursday, March 19, 2020 8:17 AM To: White, Peter (FAA) peter.white@faa.gov Cc: Vantrees, Stephen (FAA) stephen.vantrees@faa.gov Subject: Fw: Actions from 3/12/2020 Meeting: AVS/ATO Executive Coordination on NASA/General Atomics SIO
FAA/NASA Interagency Agreement #DTFAWA08-X-80020. The FAA sponsor for the work is the FAA ATO Safety and Technical Training Fatigue Risk Management Program Office. We are grateful to our FAA Program Managers Edmundo A. Sierra, Dino Piccione and Paul Krois, and to our FAA Sponsors,
FAA-H-8083-9 Aviation Instructor’s Handbook FAA-S-8081-4 Instrument Rating Practical Test Standards FAA-S-8081-12Commercial Pilot Practical Test Standards FAA-S-8081-14Private Pilot Practical Test Standards FAA-H-8083-15Instrument Flying Handbook FAA/AS
Application of ASME Fatigue Code: 3-F.1 ASME Smooth Bar Fatigue Curves Alternative Effective Stress vs Fatigue Cycles (S-N Curve) With your weld quality level assessed and an accurate FEA stress number, one can use the ASME fatigue curve to calculate the number of Fatigue Cycles. In our prior example, the fatigue stress could be 25.5 ksi or as .
Division and 3-505 Parachute Infantry Regiment on 4 August 1990. My company, Charlie 3-505, had been conducting night live-fire exercises at Fort Bragg, North Carolina. Around 2230 hours on the night of 4 August, I received a Warning Order from my commander, Captain Charles Dydasco, to prepare for movement to the Battalion Area. Shortly after midnight, in a torrential downpour, we began .
