Article
Acoustics
Adli Hasan Abu Bakar, Mathew Legg, Daniel Konings, Fakhrul Alam
Summary: This paper presents the first study on ultrasonic guided wave testing in wood using shear transducer arrays. Results show the potential for improved measurement of wood properties and structural health monitoring of wooden structures through enhancement of specific wave modes.
Article
Construction & Building Technology
Charles Rockson, Kishoare Tamanna, M. Shahria Alam, Ahmad Rteil
Summary: This study investigated the bond behavior of deformed rebar in recycled structural concrete and proposed three simplified descriptive bond strength equations to complement the designing and detailing of reinforced recycled concrete structures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Characterization & Testing
S. Herald Lessly, Senthil Rajendran
Summary: The study utilized the non-destructive testing principle of MR fluid to investigate the core compressive strength of reinforced concrete columns with slip angle orientation and bond stress relationship. Ultrasonic method was used to measure crack width and slip angle orientation of rebars, as well as determine bond strength. Experimental results showed significant variations in rebar strain, bond strength, and ultrasonic pulse velocity under different parameters.
NONDESTRUCTIVE TESTING AND EVALUATION
(2022)
Article
Green & Sustainable Science & Technology
Fakher Abbas, Fang Lin, Zhaolong Zhu, Shaoshan An
Summary: A relative stability index (RI) based on the estimated components of the soil overall disruptive characteristic curve was introduced and compared with classical soil stability indexes. Results showed a significant positive correlation between RI and sand content, while MWD and GMD were more strongly associated with physicochemical characteristics of soil. The study indicated the influential role of sand in assessing the relative strength of soils.
Article
Soil Science
C. Polakowski, A. Sochan, M. Ryzak, M. Beczek, R. Mazur, K. Majewska, M. Turski, A. Bieganowski
Summary: The aggregate size distribution of soil is a key parameter in describing soil properties. The traditional dry sieving method may lead to breakdown of less-stable aggregates. This paper presents a modified measurement system using laser diffraction for direct measurement of aggregates on a dry basis, with an average coefficient of variation of about 2.6%.
SOIL & TILLAGE RESEARCH
(2021)
Article
Construction & Building Technology
Minsheng Guan, Gang Wang, Ying Wang, Chunqing Wei, Zhichao Lai, Hongbiao Du, Ziyang Liu
Summary: This study investigated the bond behavior of concrete-filled square steel tubes using manufactured sand and recycled coarse aggregate, finding that MS-RCA-CFT members had similar bond behavior as conventional CFT members. Factors such as increasing concrete compressive strength and decreasing width-to-thickness ratio led to higher bond strength, while a stone powder content of 5% to 10% resulted in the highest bond strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Energy & Fuels
Jie Gao, Liangheng Zhang, Yan Lyu, Fan Shi, Bin Wu, Cunfu He
Summary: This study presents an analytical acoustic model to investigate the interaction between the state of charge (SOC) of lithium-ion battery and the propagation characteristics of ultrasonic guided waves. The model considers the multi-layered porous structure of the battery and uses the Biot theory and transfer matrix method to construct a theoretical model. The results show a strong correlation between the shifts in the group velocity of guided wave A0 mode and the SOC of the battery, and the proposed method is validated by experimental data.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Construction & Building Technology
Pengda Li, Jingqi Zeng, Weiwen Li, Yao Zhao
Summary: This study experimentally investigated the effect of concrete heterogeneity on the bonding behavior between carbon fiber reinforced polymer (CFRP) and concrete by varying aggregate sizes and contents. The results showed that aggregate sizes and content significantly influenced the bond properties. A fracture energy-based bond strength model incorporating aggregate area ratio parameter was proposed to accurately reflect the effects of aggregate size and content on interfacial characteristics. The proposed model's accuracy and applicability were verified through comparisons with test results and literature.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Yifan Zhang, Farhad Aslani
Summary: This paper introduces two models for predicting the compressive strength of lightweight aggregate concrete, a regression model and a back-propagation neural network (BPNN). Statistical results show that both models can provide reasonable estimations of compressive strength, with the BPNN model offering more accurate predictions compared to the regression model.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Analytical
Zhongwei Zhang, Xiyan Zhang, Bohui Ma, Mengyao Ding, Bowen Zhu, Dezheng Tong
Summary: This article introduces an ultrasonic testing instrument that measures the stiffness factors of linear springs by measuring distance values. Compared with the traditional Jolly's scale, this instrument is more convenient to use, can display distance values in real time, and provides more accurate results.
Article
Engineering, Environmental
Xingaoyuan Xiong, Yanan Shang, Lu Bai, Shuang Luo, Thomas William Seviour, Zheng Guo, Lars D. M. Ottosen, Zongsu Wei
Summary: In this study, the complete defluorination of PFOA using ultrasound/persulfate (US/PS) was investigated, and 100% defluorination was achieved after 4 hours of ultrasound treatment alone. The addition of persulfate suppressed defluorination, possibly due to the increased competition with PFOA for adsorption sites. The study also challenges the previous understanding that defluorination occurs at the bubble-water interface.
Article
Acoustics
Jack Massaad, Paul L. M. J. van Neer, Douwe M. van Willigen, Alberico Sabbadini, Nicolaas de Jong, Michiel A. P. Pertijs, Martin D. Verweij
Summary: Current ultrasonic clamp-on flow meters require manual positioning of transducer elements for optimal signal-to-noise ratio, which can be cumbersome and inaccurate. This research introduces a flow meter with two matrix arrays to automatically measure pipe and liquid parameters, improving measurement accuracy.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2022)
Article
Engineering, Electrical & Electronic
Ping Chen, Xingliang He, Xinyu Wang
Summary: A new stress measurement method using single source high-frequency cylindrical guided waves is proposed to improve the efficiency and precision of contact-type ultrasonic testing technique. Experimental results show that the evaluation errors of this method are less than 6%, making it suitable for stress measurement in steel materials.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Analytical
Siyuan Zhu, Xian Xu, Jinsong Han, Yaozhi Luo
Summary: In this paper, a guided wave-based stress measurement method for axially loaded steel tubes is developed and validated through experiments and analysis. The linear relationship between the group velocity of guided waves and the stress of the steel tube is established and verified, with an average error of 8.2%.
Article
Materials Science, Multidisciplinary
Venkatasubramanian Sivakumar, Resmi Mohan
Summary: Ultrasound technology was used to study ultrasound-induced cavitation, with energy distribution characteristics under different conditions presented. Results showed that the presence of leather decreased ultrasound cavitation energy, but increasing ultrasound power could enhance the average cavitation energy.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Agronomy
Muh Taufik, Marliana Tri Widyastuti, Albertus Sulaiman, Daniel Murdiyarso, I. Putu Santikayasa, Budiman Minasny
Summary: The study revealed the influence of soil-hydrological properties on the moistening and drying of peats and developed a Peat Fire Vulnerability Index. This index effectively assessed fire danger and highlighted the significance of the groundwater table as a threshold for fire events.
AGRICULTURAL AND FOREST METEOROLOGY
(2022)
Article
Soil Science
Peipei Xue, Budiman Minasny, Alex B. McBratney
Summary: Soil microbial interactions play a crucial role in ecosystem functions, and understanding the microbial networks influenced by land management is important. This study in the Hunter Valley region of Australia found that land use differences caused variations in soil properties and microbial community composition, particularly in the topsoils. Agricultural activities were observed to impact microbial networks in both topsoils and subsoils, with forest soils showing more connected networks compared to vineyards.
APPLIED SOIL ECOLOGY
(2022)
Article
Multidisciplinary Sciences
Jose Padarian, Budiman Minasny, Alex McBratney, Pete Smith
Summary: This study examines the potential of increasing organic carbon in soils to mitigate climate change. By using global databases and modeling techniques, the researchers estimate the additional storage potential of soil organic carbon (SOC) in global croplands. The results show that the topsoil of global croplands holds a significant amount of SOC and has additional storage potential. However, climate change may reduce this potential in the future. This study provides important insights for SOC sequestration and highlights the environmental cost of agriculture.
Article
Anthropology
Josh Stenberg, Budiman Minasny
Summary: This article traces the origins of anti-colonial violence on the Sumatra plantation and establishes the historical events based on various Sinophone versions. By connecting the anxiety in the colonial archive with the eulogy in the Sinophone literary record, a fuller vision of resistance on the Deli plantations is revealed.
BIJDRAGEN TOT DE TAAL- LAND- EN VOLKENKUNDE
(2022)
Article
Soil Science
J. Padarian, B. Minasny, A. B. McBratney
Summary: This study evaluates two methods for assessing the uncertainty of a deep learning soil spectral model for soil organic carbon prediction. Both methods show similar results for in-domain data, but Monte Carlo dropout is capable of generating wider prediction intervals for out-of-domain data, correctly indicating the difference between the new data and the training data.
Article
Soil Science
Peipei Xue, Budiman Minasny, Alex McBratney, Vanessa Pino, Mario Fajardo, Yu Luo
Summary: Microorganisms play crucial roles in soil processes, and different microbial functional groups control nutrient cycling in soils. This study investigated the environmental and soil factors that drive the distribution of bacterial functional groups involved in soil carbon cycling. The results showed that temperature, rainfall, and soil properties significantly influenced the bacterial functional groups, and agricultural practices also had significant impacts on the composition and responses of these groups.
EUROPEAN JOURNAL OF SOIL SCIENCE
(2023)
Editorial Material
Environmental Sciences
Cornelia Rumpel, Farshad Amiraslani, Deborah Bossio, Claire Chenu, Magali Garcia Cardenas, Beverley Henry, Alejandro Fuentes Espinoza, Lydie-Stella Koutika, Jagdish Ladha, Beata Emoke Madari, Budiman Minasny, Adesola Olaleye, Saidou Nourou Sall, Yasuhito Shirato, Jean-Francois Soussana, Consuelo Varela-Ortega
REGIONAL ENVIRONMENTAL CHANGE
(2023)
Article
Environmental Sciences
Xiao-Lin Sun, Budiman Minasny, Yun-Jin Wu, Hui-Li Wang, Xiao-Hui Fan, Gan -Lin Zhang
Summary: The increase in soil organic carbon (OC) in China over the past two decades suggests that atmospheric carbon dioxide is being sequestered into the soil, mitigating climate change and improving soil health. However, there have also been reports of soil pH decrease nationwide, which may negatively impact soil quality for food production and the environment. This study investigates the relationship between soil OC and pH using large-scale soil survey data from two provinces in China and finds that the changes in OC and pH are significantly correlated, with increased soil nitrogen content as the linking factor. The decrease in pH is particularly significant in the eastern region of China, where soils are more neutral in pH. The study recommends exploring alternative methods of carbon sequestration in soil to avoid potential acidification effects caused by excessive nitrogen application.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Studies
Yuxin Ma, Budiman Minasny, Valerie Viaud, Christian Walter, Brendan Malone, Alex McBratney
Summary: Soil organic carbon (SOC) redistribution plays a significant role in affecting soil quality. This study introduces a coupled-model combining RothPC-1 and a soil redistribution model to simulate SOC changes in the Lower Hunter Valley area. Results show that erosion is mainly predicted in upslope areas and deposition in low-lying areas. The study emphasizes the importance of considering soil redistribution in SOC dynamics modeling to avoid overestimation of SOC stocks.
Article
Geosciences, Multidisciplinary
Peipei Xue, Budiman Minasny, Alex McBratney, Neil L. Wilson, Yijia Tang, Yu Luo
Summary: Soil microbial communities are influenced by soil types and land use. This study investigated contrasting soils of natural forest and cropped vineyard in New South Wales, Australia and found that land use affected the bacterial community distribution in the topsoil, while soil types influenced the assembly of microbial communities in the subsoil. The study also revealed a decrease in topsoil organic carbon in the vineyard compared to the forest, which was correlated with changes in C-related genes and potentially accelerated carbon loss.
Article
Geosciences, Multidisciplinary
Andree M. Nenkam, Alexandre M. J. -C. Wadoux, Budiman Minasny, Alex B. McBratney, Pierre C. S. Traore, Anthony M. Whitbread
Summary: Many areas in the world lack sufficient soil data, leading to ineffective soil-related studies and inadequate soil management strategies. This paper demonstrates how to find "homosoils", which are geographically distant but share similar soil-forming factors, in order to obtain new soil data for a study area. By clustering the study area into homogeneous areas and identifying a homosoil for each area using distance metrics, this approach provides a solution to the problem of sparse soil data. The concept of homosoils shows promise for future applications such as transferring soil models and agronomic experimental results between areas.
Article
Environmental Sciences
Chiara Pasut, Fiona H. M. Tang, Budiman Minasny, Charles R. Warren, Feike A. Dijkstra, William J. Riley, Federico Maggi
Summary: In this study, the turnover time of soil organic carbon (SOC) pools in global wetlands and the governing processes were quantified using a comprehensive process-based biogeochemical model. The results showed that SOC turnover time ranged from 1 to 1,000 years and was mainly controlled by anaerobic and aerobic respiration, as well as abiotic destabilization from soil minerals. The findings also revealed seasonal variability in SOC turnover, indicating the need for better accounting of seasonal fluctuations to estimate carbon exchanges between wetlands and the atmosphere at geographic scales.
GLOBAL BIOGEOCHEMICAL CYCLES
(2023)
Article
Multidisciplinary Sciences
Alexandre M. J-C. Wadoux, Mercedes Roman Dobarco, Brendan Malone, Budiman Minasny, Alex B. McBratney, Ross Searle
Summary: This article introduces a new dataset of high-resolution gridded total soil organic carbon content data across Australia. The dataset includes six maps of soil organic carbon content at two resolutions and provides uncertainty estimates. The maps were obtained through interpolation of organic carbon measurements and validation showed small errors and adequate prediction uncertainty. These soil carbon maps are important for monitoring carbon stock changes and assessing the influence of climate change, land management, and greenhouse gas offset.
Article
Environmental Sciences
Budiman Minasny, Diana Vigah Adetsu, Matt Aitkenhead, Rebekka R. E. Artz, Nikki Baggaley, Alexandra Barthelmes, Amelie Beucher, Jean Caron, Giulia Conchedda, John Connolly, Raphael Deragon, Chris Evans, Kjetil Fadnes, Dian Fiantis, Zisis Gagkas, Louis Gilet, Alessandro Gimona, Stephan Glatzel, Mogens H. Greve, Wahaj Habib, Kristell Hergoualc'h, Cecilie Hermansen, Darren B. Kidd, Triven Koganti, Dianna Kopansky, David J. Large, Tuula Larmola, Allan Lilly, Haojie Liu, Matthew Marcus, Maarit Middleton, Keith Morrison, Rasmus Jes Petersen, Tristan Quaife, Line Rochefort, Linda Rudiyanto, Linda Toca, Francesco N. Tubiello, Peter Lystbaek Weber, Simon Weldon, Wirastuti Widyatmanti, Jenny Williamson, Dominik Zak
Summary: Peatlands, covering only a small percentage of the Earth's surface, are a significant carbon store. However, they are under threat due to degradation. To protect and reduce emissions from these carbon-rich ecosystems, countries have implemented regulations. This paper reviews the current state of knowledge on mapping and monitoring peatlands and highlights the need for more consistent approaches.
Article
Environmental Sciences
Kanika Singh, Ignacio Fuentes, Dhahi Al-Shammari, Chris Fidelis, James Butubu, David Yinil, Amin Sharififar, Budiman Minasny, David Guest, Damien J. Field
Summary: This study combined high-resolution satellite imagery with novel signal extraction methods to evaluate the feasibility and soil capacity of cocoa cultivation, and identified potential cocoa regions. The results showed that the classification accuracy of cocoa regions reached 97%, demonstrating the feasibility of this method for monitoring land use and cocoa production.