... pulse velocity bituminous materials signal processing field damage master curve anisotropy traffic effect mechanical properties References Lou   K. , Xiao   P. , Kang   A. , Wu   Z. , and Dong   X. , “ Effects of Asphalt Pavement Characteristics on Traffic Noise...

.... 19 10 2023 26 12 2023 30 04 2024 high-viscosity modifier high-viscosity modified asphalt physical properties rheological properties master curve modification mechanism References Bitumen with High Viscosity and Elastic Recovery for Pavement , GB/T 30516-2014 (Beijing...

...Tristan Yount; William Collins; Sebastian Lindqvist; Kim Wallin The master curve methodology is used to define the scatter and temperature dependence of ferritic steel fracture toughness in the ductile-to-brittle transition region, described by a single parameter, the reference temperature, T o...

...Enrico Lucon ASTM E1921, Standard Test Method for Determination of Reference Temperature, T 0 , for Ferritic Steels in the Transition Range , standardizes the Master Curve procedure for determining the reference temperature, T 0 , of ferritic steels in the ductile-to-brittle transition range...

... the calibrated model. Two approaches are presented for analyzing the test results: the power equation in the AASHTOWare program, and the construction of a master curve. In the full-blown testing program with three specimens and three temperatures, the master curve approach fitted the results better than...

... of this study is to verify the effectiveness of the Master Curve methodology in providing a reliable estimate of the reference temperature ( T 0 ) derived from fracture toughness data sets measured in the ductile-to-brittle transition (DBT) region of an ultrahigh strength, low alloy martensitic steel. Fracture...

... that although there is no obviously better censoring option, the option that uses an absolute ductile-tearing-limit is simpler to implement, whereas the T0 results are generally consistent with those calculated for the option with the variable ductile-tearing-limit. Keywords ASTM E1921, master curve, censoring...

... application of PA pavement. The influence of confining pressure, loading frequency, and temperature on the dynamic modulus was then studied. The master curve equations of dynamic modulus were constructed on the basis of the time-temperature superposition principle using nonlinear least squares method. Results...

... inhomogeneity data treatment master curve reactor pressure vessel steel reference temperature References Standard Test Method for Determination of Reference Temperature, To, for Ferritic Steels in the Transition Range , ASTM E1921-20 ( West Conshohocken, PA : ASTM International , approved June 1...

... performed using six different loading frequencies at each of the five selected temperatures. The results indicate that the accuracy of the modulus master curves can indeed be improved by combining the results from the UPPTs and the conventional dynamic modulus tests. The results also underline...

... the exposure of steel to neutron irradiation is determined through the model included in “Regulatory Guide 1.99 Rev. 2,” published in 1988. Since then, there have been enormous advances in this field. For example, the Master Curve, based on the reference temperature T 0 , describes the relationship between...

... modes are different. It is indicated from master curve analysis that the loading mode has a significant influence on | E *| and φ , and the main reason is that the stress state varies with the loading mode. The influence of the loading mode becomes more significant as the temperature increases...

..., www.astm.org ]. M r tests were conducted at 15°C, 25°C, and 35°C and at 0.5, 1, 1.5, and 2 Hz on a total of 33 samples with three samples per mix. DGAC mixes had the highest M r followed by P-gap and AR-gap, and then followed by the AR-open mixes. M r master curves were constructed for the mixes with 25°C...

... at three temperatures and four strain rates to calculate shear properties of asphalt mixtures based on the Mohr–Coulomb failure theory. The strength and shear property master curves were developed using the shift factor obtained from the dynamic modulus tests. The analysis results show that TTSP is still...

... compared to data measured using standard-size specimens. According to the experimental data, greater strengths were obtained using sub-scale specimens. This phenomenon was related to the lower probability of having larger flaws in smaller-size specimens. In addition, a creep-rupture master curve...

..., an improved estimation formula for the rate-induced shift of T 0 is derived. Suggestions are made for improvement of ASTM E1921. 06 11 2012 21 03 2014 10 10 2014 reference temperature ferritic steel loading rate temperature shift ductile-to-brittle transition master curve...

...-modified binders. Dynamic modulus test was carried out for a wide range of temperatures and frequencies and master curves were constructed. It was observed that the American Association of State Highway and Transportation Officials (AASHTO) procedure for master curves does not take into account...

... on three asphalt mixtures for different gradations and binders. The effect of test temperature and loading frequency on dynamic modulus ( E *) and phase angle ( δ ) of asphalt mixtures are investigated. On the basis of discussing the shift factors of dynamic modulus and phase angle, a master curve...

...Kim R. W. Wallin The master curve brittle fracture toughness estimation method described in the ASTM E1921-11 test standard is based on a theoretical scatter and size effect assumption and makes use of a maximum likelihood estimation method to determine the fracture toughness transition temperature...

... of confidence. The analysis results show no statistical difference between the dynamic modulus for the two studied strain levels and no permanent damage was found on tested specimens for all three test temperatures. Comparison of the master curves built by different temperature and frequency combinations...