Ultrasonic Inspection for Welds with Irregular Curvature Geometry Using Flexible Phased Array Probes and Semi-Auto Scanners: A Feasibility Study

Pipes of various shapes constitute pipelines utilized in industrial sites. These pipes are coupled through welding, wherein complex curvatures such as a flange, an elbow, a reducer, and a branch pipe are often found. Using phased array ultrasonic testing (PAUT) to inspect weld zones with complex curvatures is faced with different challenges due to parts that are difficult to contact with probes, small-diameter pipes, spatial limitations due to adjacent pipes, nozzles, and sloped shapes. In this study, we developed a flexible PAUT probe (FPAPr) and a semi-automatic scanner that was improved to enable stable FPAPr scanning for securing its inspection data consistency and reproducibility. A mock-up test specimen was created for a flange, an elbow, a reducer, and a branch pipe. Artificial flaws were inserted into the specimen through notch and hole processing, and simulations and verification experiments were performed to verify the performance and field applicability of the FPAPr and semi-automatic scanner.

Spaces and roles of contemporary art in industrial and technological ruins

This article proposes some potential contributions of contemporary art to industrial and technological heritage discussions. The paper analyses the relations among art, industrial ruins, technological trash, heritage, and society from an archaeological perspective, although this standpoint is compared to and complemented with those of art and art history. First, the text presents how industrial sites and technological artefacts from the recent past are transformed for/by the artists. In doing so, it offers a preliminary basic typology of art-obsolescence relations illustrated with cases from Europe, Asia and the Americas. Four major kinds of interactions are introduced: the conversion of abandoned industrial buildings into art galleries and museums; the transformation of larger obsolete industrial/technological areas into creative hubs; the intervention of artists in industrial ruins; and the creative recycling of technological waste. Second, the text infers from the examples provided in the typology three possible functions of art regarding heritage: revelation/addition of value; mediation between the public and dark heritages; and recognition in technological and industrial history. In the end, the paper defends the role of art in the making of industrial and technological heritages, as well as in reconnecting them to society.

Versatile Bioelectrochemical system for heavy metals removal

Industrial activity has resulted in heavy metals anthropogenic contamination of groundwater, especially in industrial or mining areas. Bioelectrochemical systems (BES) can be used for metals removal and recovery from aqueous solutions. In the framework of GREENER project, double-chamber BES have been adopted to treat groundwater from industrial sites containing copper, nickel and zinc (Cu, Ni and Zn), among other contaminants. Two operation modes, (i) short-circuited microbial fuel cell (MFC), and (ii) power supply driven microbial electrolysis cell (MEC, poisoning the cathode at -0.4 V vs. Ag/AgCl), were studied for metals removal at lab-scale. Two control reactors were run to evaluate metals adsorption on cathodes and membranes, and the effect of anolyte composition. Synthetic water containing different concentrations of Cu, Ni and Zn were treated, and metals removal pathways were studied. MEC and MFC performed similarly and the highest removal efficiencies were 97.1±3.6%, 50.7±6% and 74,5% for Cu, Ni and Zn respectively, from initial concentrations in the range of 1.1-1.5 mM.

Differences in Career Preparation Behavior According to Personal Variables of College Students Majoring in Hairdressing

This study was conducted for the purpose of providing realistic data necessary for successful career development and job guidance for college students majoring in hair design. For this study, 250 questionnaires were distributed to college students majoring in hairdressing in Daegu and Gyeongsangbuk-do from April 15 to May 30, 2021, and a total of 243 copies were used for analysis, excluding inaccurate responses. For the analysis, the SPSS 26.0K statistical program was used, and factor analysis, t-tset, and one-way batch variance analysis were performed. The analysis results are as follows. It was analyzed that female students had a higher level of preparation behavior than male students. The level of career preparation behavior was high for those with major certificates, those with experience in industrial sites, and those with more than one year of experience in player learning. In addition, the level of career preparation behavior of the group who chose the career path according to their aptitude and the group who thought positively about the job prospects was high.

Noise Source Identification in Training Facilities and Gyms

This paper deals with noise problems in industrial sites adapted for commercial training venues. The room acoustics of such an object were analyzed in the scope of the reverberation time and potential acoustic adaptation measures are indicated. Identification and classification of noise sources in training facilities and gyms was carried out based on the acoustic measurements. The influence of rubber padding on impact and noise reduction was investigated in the case of chosen noise-intensive exercise activities performed in a previously described acoustic environment. Potential noise reduction measures are proposed in the form of excitation reduction, vibration isolation, and room acoustics adaptation.

Contribution to Developing an Environmental Emergency Response for Industrial Sites

This study aims to guarantee that all anticipated emergencies are effectively planned, reviewed, and the necessary equipment and resources are made publicly available to prevent and reduce environmental damage in the event of emergencies for industrial sites. This research aims to ensure that all necessary steps are taken to protect the company's staff, contractors, the environment, neighbouring communities, and assets in the event of a catastrophic leak. It could also serve as a baseline for the industrial site and its subcontractors. Additional measures could be included to improve good practices; The Emergency Preparedness Strategy programs are broad action plans for dealing with situations that may arise at a facility or in the surrounding community. In the event of an emergency at an industrial site, this will allow lives to be saved and property damage to be minimized.

Effects of bio-chemo-mechanical processes on the properties of contaminated marine sediments

A detailed multi-scale investigation of the geotechnical, chemical and mineralogical properties was conducted on contaminated sediment samples collected within the Mar Piccolo, a marine basin in south of Italy. The basin is located close to one of the most important industrial sites in Europe also declared ‘at high risk of environmental crisis’ and prioritised for remediation activities. A multidisciplinary investigation campaign showed that the samples collected close to the seafloor are characterized by high values of both heavy metals and organic pollutants and by the presence of significant amount of organic matter. Several samples in the top layer exhibited peculiar geotechnical properties, in terms of plasticity and activity indexes, compressibility and hydraulic permeability. While the prime suspect for such unconventional behaviour was the chemo-mechanical coupling between soil skeleton and contaminants, it turned out that the biogeochemical degradation of organic matter and the presence of microfossils and diatoms is likely to affect significantly the micro to macro behaviour of polluted marine sediments.

Adoration of the Joint

<p>At many sites across New Zealand, industrial demands and the built environment have taken precedence over considerations for neighbouring natural settings, with a lack of threshold or transitional space between the two often leading to heavy contextual clashes. This is a prominent issue where the Korokoro Recreation Reserve meets the numerous industrial sites at Cornish Street in Lower Hutt, Wellington. The aim of this research is to address these fragile contextual issues with an architectural intervention that acts like a joint on multiple theoretical levels, furthering our understanding of how architecture can contribute to the landscape, establishing a narrative between two conflicting conditions while establishing a transitional threshold between them. Marco Frascari and Kenneth Frampton write on the theory of synecdoche in architecture and the capacity of details as generators, evidencing the skilful joining and consideration of parts, defined as ‘a process of signification’ resulting in synecdochal architecture, in which a part is made to represent the whole and vice versa. When architecture evidences synecdoche, a sensitive viewer can understand an architectural intervention’s underlying meaning and understand architecture as a set of dialogues. Through these means of enabling a greater understanding of architecture, the humble joint provides a didactic role, and through this didactic capability people may come to see and understand the important role that architecture can play in the context of its natural environment.</p>

Adoration of the Joint

<p>At many sites across New Zealand, industrial demands and the built environment have taken precedence over considerations for neighbouring natural settings, with a lack of threshold or transitional space between the two often leading to heavy contextual clashes. This is a prominent issue where the Korokoro Recreation Reserve meets the numerous industrial sites at Cornish Street in Lower Hutt, Wellington. The aim of this research is to address these fragile contextual issues with an architectural intervention that acts like a joint on multiple theoretical levels, furthering our understanding of how architecture can contribute to the landscape, establishing a narrative between two conflicting conditions while establishing a transitional threshold between them. Marco Frascari and Kenneth Frampton write on the theory of synecdoche in architecture and the capacity of details as generators, evidencing the skilful joining and consideration of parts, defined as ‘a process of signification’ resulting in synecdochal architecture, in which a part is made to represent the whole and vice versa. When architecture evidences synecdoche, a sensitive viewer can understand an architectural intervention’s underlying meaning and understand architecture as a set of dialogues. Through these means of enabling a greater understanding of architecture, the humble joint provides a didactic role, and through this didactic capability people may come to see and understand the important role that architecture can play in the context of its natural environment.</p>