Bottom to top approach for railway KPI generation

Villarejo, Roberto; Johansson, Carl-Anders; Leturiondo, Urko; Victor, Victor; Galar, Victor

doi:10.14195/978-972-8954-42-0_25

Cited by 4 publications

(7 citation statements)

References 4 publications

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“…This section deals with the concept of metrology and its relation with the data reliability provided by the sensors that are used in Condition Based Maintenance. According to [14], modern metrology introduces key factors such as downtime and product quality. [15] refers that, in the field of applied sciences, measurements are not accurate, as they are always subject to errors due to various causes, human and materials.…”

Section: Metrologymentioning

confidence: 99%

“…For this reason, it becomes necessary to acquire calibration management strategies. As explains [14], a complete calibration, performed on large or complex machines can take several days. Therefore, it is necessary to define the best calibration strategy for the sensors, depending on their situation.…”

Section: Maintenance Of Calibrationmentioning

confidence: 99%

“…It is also necessary to define appropriate tolerances for the checks carried out, thus allowing to stimulate more interventions. [14] Fig . 11 -Predictive Calibration [Source: [14]]…”

Section: Maintenance Of Calibrationmentioning

confidence: 99%

“…It will also reduce the overall downtime of a manufacturing facility, eliminating the sensor as the root cause of any subsequent failure in the production process. [14] Another important calibration concept is the system calibration. The sensors can be calibrated individually, with separate calibrations, or the entire instrument chain can be calibrated, from the sensor input to the reading equipment.…”

Section: Maintenance Of Calibrationmentioning

confidence: 99%

“…Economic and performance aspects need to be considered to decide the support for checking machines and specific positional error handling policies. [14] Finally, [27] and [28] argue that a calibration record system must be maintained in all instruments, including the following data:…”

Section: Maintenance Of Calibrationmentioning

confidence: 99%

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Calibration and Certification of Industrial Sensors – a Global Review

Martins

Farinha

Cardoso³

2020

Wseas Transactions on Systems and Control

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The main objective of this paper is to describe the state of the art of the calibration and certification of industrial sensors, giving an approach on how companies can manage the sensors’ calibration, namely the ones that are incorporated in the equipment. For any industry it is essential to make products that satisfy the customers in terms of quality and, simultaneously, to be competitive in the market. The data obtained from the sensors placed in the equipment is one of the sources that helps to increase the performance, adding value for the competitiveness of the company in the market. Sensors are responsible, in many sectors, to guarantee equipment availability and product quality. In this way, the certification of the company and of the equipment, not only guarantee quality and prevent unwanted and unforeseen costs, but also gives company credibility, namely from the customer's point of view. This paper focus on the state of art of industrial metrology, namely sensors, standards and measuring tools, calibrations and the certification of calibration. It also includes a theoretical section about sensors, types of sensors, their operation and characteristics. Next, it is presented the theme of metrology and the measurement science, responsible for ensuring the quality and veracity of the data sent by the reading equipment. It also addresses the importance of metrological traceability and certified management systems, which are required to certify the sensors calibration, in order to guarantee the effectiveness of the measurements and, consequently, the rigor of operation of the associated quality system.

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Section: Metrologymentioning

confidence: 99%

Section: Maintenance Of Calibrationmentioning

confidence: 99%

“…It is also necessary to define appropriate tolerances for the checks carried out, thus allowing to stimulate more interventions. [14] Fig . 11 -Predictive Calibration [Source: [14]]…”

Section: Maintenance Of Calibrationmentioning

confidence: 99%

Section: Maintenance Of Calibrationmentioning

confidence: 99%

Section: Maintenance Of Calibrationmentioning

confidence: 99%

See 3 more Smart Citations

Calibration and Certification of Industrial Sensors – a Global Review

Martins

Farinha

Cardoso³

2020

Wseas Transactions on Systems and Control

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Strengthening and self‐healing of natural fiber composites via PLA core–shell nanofibers as healing agent carrier

Hassim,

Prabhakar,

Song

2024

Polymer Composites

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The resin‐rich region between the fiber laminates of a fiber‐reinforced composite is susceptible to matrix damage impeding the composite's integrity. Hence, this study intends to interlayer core–shell poly(lactic) acid (PLA) nanofibers between the flax fibers as a preventive and reactive mechanism to matrix damages in the resin‐rich area. The nanofibers prevent premature damage by suppressing or mitigating crack propagation and in the event of damage to the nanofibers, it reacts by releasing the encapsulated healing agent. Upon interlayering the flax fiber laminates with self‐healing core–shell nanofibers, the flexural modulus exhibited an increment of 31% whereas the short beam strength improved by 19%. Self‐healing traits of the composites were assessed by subjecting the composites to repeated flexural or short beam strength tests for several load cycles. Upon initial damage to the composites, the composites exhibited a full retention and improvement in mechanical properties. The self‐healing composites were also able to withstand more loading cycles than the conventional composite under repeated short‐beam strength tests. Under both configurations, the damaged self‐healing composites exhibited a residual strength greater than or equivalent to the ultimate strength of a pristine flax fiber composite.Highlights Fabrication of EP/flax self‐healing composites by PLA core–shell nanofibers. Interlayering healing nanofiber mats between flax fabrics in an FRP composite. Nanofiber interlayers exhibited a profound impact on the composite properties. Nano mats facilitate autonomous repair of internal defects within matrices. The self‐healing composites showed full retention and mechanical strength.

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