Performance investigation and parameter optimization of ultra-light aerated concrete using orthogonal experimental design

Wei, Pengfei; Yin, Guansheng; Shi, Minghui; Zhang, Wanqi; Feng, Junjie

doi:10.1016/j.cscm.2023.e01841

Cited by 4 publications

(3 citation statements)

References 49 publications

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Section: Design Of Experiments Methodsmentioning

confidence: 99%

“…The introduction of these techniques required the use of mathematical concepts such as matrices with special properties (rotatability, D optimal, A optimal) that brought users maximum satisfaction with minimum resources [49][50][51]. There are many fields where this method has been successfully applied, including agriculture [52,53], materials science [54,55], environment [56,57], process optimisation [58,59], sustainable building construction [14,15], etc. Overall, it can be said that the experimental planning method is able to solve processes/phenomena of the black box type shown in Figure 5 that depend on a series of known/controllable input factors, Xi, and that can influence their output characteristics, Yi, called output factors, being totally dependent on them.…”

Section: Design Of Experiments Methodsmentioning

confidence: 99%

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Advanced Design for Experimental Optimisation of Physico-Mechanical Characteristics of Sustainable Local Hemp Concrete

et al. 2023

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The meaning of technological progress is to produce economic development and to increase the level of personal comfort. Sustainability can only be achieved if, at the microsystem level as well as at the macrosystem level, the secondary effects of the activities undertaken by people on the environment are in a state of neutrality compared to the impact they can produce on natural conditions. This neutrality can be intrinsic or can be achieved through coercive and compensatory measures. If we take into account the production of carbon dioxide that accompanies a product from the stages of conceptualisation, design, procurement of materials, execution, operation, maintenance, decommissioning and recycling the waste produced at the end of use, then nothing can be sustainable in pure form. Nevertheless, there are products whose production, both as a raw material and as a technological process, can be neutral in terms of carbon emissions. Moreover, they can even become carbon negative over time. This is also the case with eco-sustainable hemp concrete, whose capacity to absorb carbon dioxide starts from the growth phase of the plant from which the raw material is obtained and continues throughout the existence of the constructed buildings. Not only does it absorb carbon dioxide, but it also stores it for a period of at least 50 years as long as the construction is guaranteed, being at the same time completely recyclable. However, in order to obtain an optimal mixture from the point of view of raw material consumption, represented by industrial hemp wood chips and the binder based on lime and cement, multiple experiments are necessary. The study presented in this work is based on the use of an advanced method of experimental planning (design of experiments method), which makes possible the correlation between the values obtained experimentally and the algorithm that generated the matrix arrangement of the quantities of materials used in the recipes. This approach helps to create the necessary framework for parametric optimisation with a small number of trials. Thus, it is possible to obtain the mathematical law valid within the minimum and maximum limits of the studied domain that defines the characteristics of the material and allows the achievement of optimisation. The material is thus designed to satisfy the maximum thermal insulation requirements that it can achieve depending on a certain minimum admissible compressive strength.

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Section: Design Of Experiments Methodsmentioning

confidence: 99%

Section: Design Of Experiments Methodsmentioning

confidence: 99%

Advanced Design for Experimental Optimisation of Physico-Mechanical Characteristics of Sustainable Local Hemp Concrete

et al. 2023

View full text Add to dashboard Cite

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“…Te selected sample points should sufciently refect the characteristics of the entire experimental design space, making it a crucial aspect of constructing the response surface model. Commonly used methods for sample selection include central composite design (CCD) [31], Latin hypercube sampling design [32], orthogonal experimental design [33], and Box-Behnken experimental design [34]. Considering the complexity of the mapping relationship between design variables and output response values, the central composite design method is adopted in this paper to construct the sample space.…”

Section: Design and Simulationmentioning

confidence: 99%

An Investigation of the Acoustic Enclosure of an Air Conditioning Compressor Using Response Surface Analysis and Topological Rigidity Optimization

Cao,

Yang,

et al. 2024

Shock and Vibration

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A novel split-type air conditioning system is introduced to balance usability and portability. Unlike conventional split-type systems, where the compressor is typically placed outside, this system situates the compressor within the indoor unit, which may expose users to compressor noise. There are prominent peaks in the compressor noise spectrum, particularly at the compressor operating frequency and its harmonics, notably the second and third harmonics. The research presents a multilayered acoustic enclosure specifically designed for air conditioning compressors to address this issue without modifying the compressor or indoor unit casing. In order to get better sound insulation performance, a response surface methodology (RSM) is applied to optimize the thickness ratio, open area ratio, and open area height of the acoustic enclosure with predefined thickness. In addition, topological optimization is employed to strengthen weak areas of the acoustic enclosure. Then, experimental trials using the proposed acoustic enclosure are conducted in a semianechoic chamber. Results demonstrate significant reductions in noise levels, including 7.99 dB(A), 5.69 dB(A), and 5.19 dB(A) reductions in the fundamental frequency, second harmonic, and third harmonic noise of the compressor’s operating frequency, respectively.

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Emergency evacuation risk assessment method for educational buildings based on improved extreme learning machine

Zhang

Wang

et al. 2023

Reliability Engineering & System Safety

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Performance investigation and parameter optimization of ultra-light aerated concrete using orthogonal experimental design

Cited by 4 publications

References 49 publications

Advanced Design for Experimental Optimisation of Physico-Mechanical Characteristics of Sustainable Local Hemp Concrete

Advanced Design for Experimental Optimisation of Physico-Mechanical Characteristics of Sustainable Local Hemp Concrete

An Investigation of the Acoustic Enclosure of an Air Conditioning Compressor Using Response Surface Analysis and Topological Rigidity Optimization

Emergency evacuation risk assessment method for educational buildings based on improved extreme learning machine

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