@article{zhang_wang_su_2019, title={Fatigue damage evolution model of asphalt mixture considering influence of loading frequency}, volume={218}, ISSN={["1879-0526"]}, DOI={10.1016/j.conbuildmat.2019.05.029}, abstractNote={In view of shortcomings for the traditional fatigue theory in addressing fatigue cracking distress of asphalt pavement, this paper attempts to adopt fatigue damage theory, which is more consistent with the essence of pavement fatigue distress, to study the fatigue damage characteristic of asphalt mixture, and mainly focuses on its pivotal content—damage evolution model. Considering the important influence of loading frequency on the fatigue life and damage evolution characteristics of asphalt mixture, a new damage evolution model is constructed by introducing the influence of loading frequency into the classical Chaboche damage evolution model, as well as the theoretical analysis and laboratory tests are used to analyze and verify the model proposed in the paper. The results show that the calculated results of the model agree well with the measured, which can not only reflect the basic law of damage evolution and accumulation for asphalt mixture, but also reflect the influence of loading frequency on fatigue damage characteristics of mixture. Consequently, it is worthy of further application and promotion in the research of fatigue damage of asphalt pavement.}, journal={CONSTRUCTION AND BUILDING MATERIALS}, author={Zhang, Jun and Wang, Yizhuang David and Su, Yongtao}, year={2019}, month={Sep}, pages={712–720} }
@article{lei_zhang_zhang_dinh_li_2018, title={Experimental investigations on the boiling heat transfer of horizontal flow in the near-critical region}, volume={125}, ISSN={["1879-2189"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85046342995&partnerID=MN8TOARS}, DOI={10.1016/j.ijheatmasstransfer.2018.04.043}, abstractNote={The critical point is the end point of a phase equilibrium curve; liquid and its vapor can coexist under designated points. Close to the critical point, thermophysical properties present clear variations, especially in the region of 0.85Pcr∼Pcr. Latent heat and liquid density in this region decrease more quickly than in lower-pressure areas, resulting in unique boiling heat transfer behavior. This region is also called the near-critical region. However, only a few scholars have discussed the heat transfer phenomenon; thus, it is difficult to ascertain the near-critical region’s properties and characteristics from extant literature. In the present study, we conduct experimental investigations to explore the specificities of the heat transfer characteristics of carbon dioxide in horizontal flow within the near-critical region in a circular channel with a diameter of 4 mm. The operating pressure ranges from 6.26 MPa to 7.3 MPa with a mass flow rate between 200 and 400 kg/m2 s, heat flux between 5 and 140 kW/m2, and test section inlet temperature of −5 °C. Then, we examine the inner-wall temperature and heat transfer coefficient profiles at different pressures within the near-critical region. The results show that at high heat flux, departure from nucleate boiling (DNB) phenomenon presents with a sudden decrease in the heat transfer coefficient in the subcooled region. The higher the heat flux, the more seriously deteriorating the heat transfer is. Interestingly, the temperature reaches its peak in the post-DNB region rather than at the critical vapor quality point. With an increase in pressure, DNB occurs early with lower vapor quality, and the temperature peak decreases at the given heat flux and mass flux. On the contrary, DNB is delayed with an increase in mass flux. A series of boiling heat transfer correlations in a subcooled region, two-phase flow region, and superheated region are proposed in addition to a new predictive correlation for critical heat flux in the near-critical region at a given mass flux.}, journal={INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER}, author={Lei, Xianliang and Zhang, Weiqiang and Zhang, Jun and Dinh, Nam and Li, Huixiong}, year={2018}, month={Oct}, pages={618–628} }
@article{zhang_su_pennec_jing_liu_hu_2018, title={Wavefront steering of elastic shear vertical waves in solids via a composite-plate-based metasurface}, volume={124}, ISSN={["1089-7550"]}, DOI={10.1063/1.5049515}, abstractNote={We report a novel approach to control the wavefronts of shear vertical (SV) waves in solids using metasurfaces constituted by a stacked array of composite plates, which are composed of two connecting parts made of different materials. The metasurfaces are connected at two ends to the half-space solids where the elastic SV waves propagate. The incident SV waves in the left half-space solid induce flexural waves in the composite plates and subsequently are converted back to SV waves in the right half-space solid. The time delay of flexural waves in each composite plate of the metasurfaces is tuned through the varying length of the two connecting components. To quantitatively evaluate the time delay in each composite plate, a theoretical model for analyzing the phase of the transmitted SV waves is developed based on the Mindlin plate theory. To control the SV waves at will, each composite plate in the metasurface is delicately designed according to the proposed theoretical model. For illustrative purposes, two metasurfaces are designed and numerically validated.We report a novel approach to control the wavefronts of shear vertical (SV) waves in solids using metasurfaces constituted by a stacked array of composite plates, which are composed of two connecting parts made of different materials. The metasurfaces are connected at two ends to the half-space solids where the elastic SV waves propagate. The incident SV waves in the left half-space solid induce flexural waves in the composite plates and subsequently are converted back to SV waves in the right half-space solid. The time delay of flexural waves in each composite plate of the metasurfaces is tuned through the varying length of the two connecting components. To quantitatively evaluate the time delay in each composite plate, a theoretical model for analyzing the phase of the transmitted SV waves is developed based on the Mindlin plate theory. To control the SV waves at will, each composite plate in the metasurface is delicately designed according to the proposed theoretical model. For illustrative purposes, t...}, number={16}, journal={JOURNAL OF APPLIED PHYSICS}, author={Zhang, Jun and Su, Xiaoshi and Pennec, Yan and Jing, Yun and Liu, Xiaofeng and Hu, Ning}, year={2018}, month={Oct} }
@inproceedings{zhang_sabouri_guddati_kim_2013, title={Development of a failure criterion for asphalt mixtures under fatigue loading}, volume={82}, booktitle={Asphalt paving technology 2013, vol 82}, author={Zhang, J. and Sabouri, M. and Guddati, M. N. and Kim, Y. R.}, year={2013}, pages={1–22} }
@article{zhang_zheng_menne_2012, title={A Bayes Factor Model for Detecting Artificial Discontinuities via Pairwise Comparisons}, volume={25}, ISSN={["1520-0442"]}, DOI={10.1175/jcli-d-12-00052.1}, abstractNote={AbstractIn this paper, the authors present a Bayes factor model for detecting undocumented artificial discontinuities in a network of temperature series. First, they generate multiple difference series for each station with the pairwise comparison approach. Next, they treat the detection problem as a Bayesian model selection problem and use Bayes factors to calculate the posterior probabilities of the discontinuities and estimate their locations in time and space. The model can be applied to large climate networks and realistic temperature series with missing data. The effectiveness of the model is illustrated with two realistic large-scale simulations and four sensitivity analyses. Results from applying the algorithm to observed monthly temperature data from the conterminous United States are also briefly discussed in the context of what is currently known about the nature of biases in the U.S. surface temperature record.}, number={24}, journal={JOURNAL OF CLIMATE}, author={Zhang, Jun and Zheng, Wei and Menne, Matthew J.}, year={2012}, month={Dec}, pages={8462–8474} }