Industry 4.0: A Survey on Technologies, Applications and Open Research Issues

Technology adoption is always a difficult task for Small and Medium-sized Enterprises (SMEs) due to lack of resources and other market issues. Many technology challenges adversely affect the sustainable business performance of SMEs. However, the incorporation of Industry 4.0 can overcome various technology issues. The goal of Industry 4.0 is to attain an advanced level of operational effectiveness and productivity, as well as a higher level of automatization. Thus, the objective of this study is to identify the role of Industry 4.0 to promote sustainable business performance in SMEs in Thailand. A survey has been prepared to collect the data from managers of SMEs and analyzed with the help of Partial Least Square. The questionnaire was used to collect the data and questionnaires were distributed by using simple random sampling. A total of 500 questionnaires were distributed amongst the managerial staff of SMEs located in Thailand. From these distributed questionnaires, 280 were returned and 270 valid responses were found. Data were analyzed by using Partial Least Square (PLS)-Structural Equation Modeling (SEM). Findings reveal that Industry 4.0 is a key to the growth of sustainable business performance among SMEs. Elements of Industry 4.0 such as big data, Internet of Things and smart factory have a positive role in promoting information technology (IT) implementation, which contributes to sustainable business performance. Moreover, organization structure and process strengthen the positive relationship between Industry 4.0 and IT implementation.

https://www.mdpi.com/2076-0760/8/5/154/pdf

Industry 4.0: A Solution towards Technology Challenges of Sustainable Business Performance

IEEE Standard on Piezoelectricity

The role of wet wipes and sanitary towels as a source of white microplastic fibres in the marine environment

Online Monitoring and Control of Flow rate in Oil Pipelines Transportation System by using PLC based Fuzzy‐PID Controller

Rotating instability (RI) occurs at off-design conditions in compressors, predominantly in configurations with large tip or hub clearance ratios of s* �> 3%. RI is the source of the
blade tip vortex noise and a potential indicator for critical operating conditions like rotating stall and surge. The objective of this paper is to give more physical insight into
the RI phenomenon using the analysis results of combined near-field measurements with high-speed particle image velocimetry (PIV) and unsteady pressure sensors. The investigation was pursued on an annular cascade with hub clearance. Both the unsteady flow field next to the leading edge as well as the associated rotating pressure waves were captured. A special analysis method illustrates the characteristic pressure wave amplitude distribution, denoted as “modal events” of the RI. Moreover, the slightly adapted method reveals the unsteady flow structures corresponding to the RI. Correlations between the flow profile, the dominant vortex structures, and the rotating pressure waves were found. Results provide evidence to a new hypothesis, implying that shear layer instabilities constitute the basic mechanism of the RI.

Rotating Instability in an Annular Cascade: Detailed Analysis of the Instationary Flow Phenomena

https://depositonce.tu-berlin.de/bitstream/11303/8039/2/1-s2.0-S0955598616300875-main.pdf

Simulation-based determination of systematic errors of flow meters due to uncertain inflow conditions

Abstract This paper summarizes the problems caused for wastewater systems by changing wastewater composition, especially the increasing use of nonwoven wet wipes and their disposal via the toilet. The nonwoven wet wipes do not disintegrate in the sewer system as paper-based toilet does, but accumulate to large agglomerations that can block the system and clog pumps. This not only reduces the operational safety and stability of the wastewater system, but also costs the operator a lot of money. The paper introduces an approach to estimate the composition of wastewater and presents first results for the city of Berlin.

/pdf/investigations-into-wastewater-composition-focusing-on-uz7wx5f1mv.pdf

Investigations into wastewater composition focusing on nonwoven wet wipes

Vortex pumps can impel solid-containing fluids and are therefore widely applied, from wastewater transport to the food industry. Despite constant efforts to improve vortex pumps, however, they have remained relatively inefficient compared to conventional centrifugal pumps. To find an optimized design of vortex pumps, this paper provides a systematic analysis on experimental studies that investigated how variations in geometric parameters influence vortex pump characteristics, in particular the pump head, the pressure coefficient and the efficiency for best point operation. To this end, an extensive literature search was conducted, and eighteen articles with 53 primary investigations were identified and meta-integrated. This showed that it is not yet clarified how vortex pumps operate. Two different assumptions of the underlying operating principle of a vortex pump lead to diverging design principles. From the results of this meta-analysis, we deduce recommendations for a more efficient design of a vortex pump and emphasize further aspects on the underlying operating principle of a vortex pump.

/pdf/design-parameters-of-vortex-pumps-a-meta-analysis-of-31981nb16s.pdf

Design Parameters of Vortex Pumps: A Meta-Analysis of Experimental Studies

The present work aims to experimentally and numerically study the self-cleansing velocity for non-cohesive sediments in urban sewers as well as the influence of the particle size and bed roughness ...

Paul Uwe Thamsen

Papers

Rotating Instability in an Annular Cascade: Detailed Analysis of the Instationary Flow Phenomena

Simulation-based determination of systematic errors of flow meters due to uncertain inflow conditions

Investigations into wastewater composition focusing on nonwoven wet wipes

Design Parameters of Vortex Pumps: A Meta-Analysis of Experimental Studies

Analysis of sediment transport in sewer pipes using a coupled CFD-DEM model and experimental work