scholarly journals Contact-Free Mortuary Trolley Design as a Device for the Mobility of Covid-19 Victims

2021 ◽  
Vol 4 (1) ◽  
pp. 21-28
Author(s):  
Vania Katherine Mulia ◽  
Nanda Indriana ◽  
Qurriyatus Zahro ◽  
Farid Triawan
Keyword(s):  
Safety Factor ◽  
Health Workers ◽  
Fatigue Loading ◽  
Maximum Load ◽  
Joint Power ◽  
Conveyor System ◽  
Mobility Aid ◽  
Critical Components ◽  
Contact Free ◽  
Demand For Health

The Covid-19 pandemic has caused many issues, especially in the medical field. One of the groups that are affected by the pandemic the worst is the health workers. The surge of demand for health services, especially for Covid-19 patients, overwhelms health workers, forcing them to work extra hard and eventually experience exhaustion. Due to this condition, the health workers may face difficulties in doing heavy-duty work. This paper proposes a design of a mortuary trolley as a device to ease the health workers in handling the dead bodies of Covid-19 victims. Considering the need for a corpse mobility aid that is contact-free, the design utilizes a combination of a scissor lift structure, a power screw mechanism to elevate and lower the table, and a conveyor system to load and unload the table. To ensure that the device can operate without experiencing unwanted failure, strength analyses are done on the most critical components, such as the scissor arm, pin joint, power screw, and scissor arm connector, to determine the safety factor at maximum load in static and fatigue loading condition. Analysis results show that all those components have a safety factor greater than 1 for both static and fatigue loading conditions, indicating the device will not yield and is predicted to have infinite life. The design and analyses of this device can be a reference for manufacturers of medical devices to design a mortuary trolley to ease the work of health workers.

scholarly journals Lifting Kit for Flooded Furnitures: Mechanical Design and Strength Analysis

2021 ◽  
Vol 6 (2) ◽  
pp. 75
Author(s):  
Muhammad Dzulkifly ◽  
Raffy Frandito ◽  
Mochammad Rafli Ramadhani ◽  
Wildan Rahmawan ◽  
Farid Triawan
Keyword(s):  
Mechanical Design ◽  
Fatigue Loading ◽  
Maximum Load ◽  
Electronic Equipment ◽  
Strength Analysis ◽  
Safety Factors ◽  
Flood Water ◽  
The World ◽  
Critical Components ◽  
Mechanical Tool

<p>Almost every year, floods disaster becomes the scourge of many countries in the world, including Indonesia.  When the flood comes and submerges the houses, every item and household furniture in it will also be submerged in flood water. Furniture that is heavy and difficult to move, especially electronic equipment such as refrigerators, may be left by the owner when a flood occurs. To prevent the furniture from submerging, a lifting kit is needed. For this reason, the purpose of this work is to design a mechanical tool/kit that can lift or elevate the electronic furniture such as refrigerator to a higher position and avoid the damage caused by flood. The kit is expected to be able to cover a 100 x 80 cm base of the refrigerator with maximum load of 200 kg. The elevation of the lifting kit is set to be higher than 50 cm. Calculation for the stress and fatigue analysis is also performed to determine the strength of the structure. As a result, the obtained safety factors for the critical components under static and fatigue loading conditions show values of more than one, indicating the product is safe for real operation. In addition, the required torque to produce the elevation is also calculated and discussed.</p>

scholarly journals Acoustic emission for monitoring aircraft structures

2009 ◽  
Vol 223 (5) ◽  
pp. 525-532 ◽  
Author(s):  
K M Holford ◽  
R Pullin ◽  
S L Evans ◽  
M J Eaton ◽  
J Hensman ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Magnetic Particle ◽  
Fatigue Cracks ◽  
Principal Component ◽  
Fatigue Loading ◽  
Probability Density Functions ◽  
Aircraft Industry ◽  
Safety And Reliability ◽  
Critical Components

Structural health monitoring (SHM) is of paramount importance in the aircraft industry: not only to ensure the safety and reliability of aircraft in flight and to ensure timely maintenance of critical components, but also increasingly to monitor structures under test for airworthiness certification of new designs. This article highlights some of the recent advances in the acoustic emission (AE) technique as applied to SHM, and the new approaches that are crucial for the successful use of AE data for diagnostic purposes. These include modal analysis, enhanced location techniques, and novel signal processing approaches. A case study is presented on a landing gear component undergoing fatigue loading in which a linear location analysis using conventional techniques identified the position of fracture and final rupture of the specimen. A principal component analysis approach was used to separate noise signals from signals arising from fatigue cracks, which identified and located further fatigue crack positions, subsequently confirmed by magnetic particle inspection. Kernel probability density functions are used to aid visualization of the damage location.

scholarly journals Fatigue behaviour of fibre-reinforced composite T-joints

2018 ◽  
Vol 165 ◽  
pp. 07004
Author(s):  
Ying Wang ◽  
Constantinos Soutis
Keyword(s):  
Fatigue Life ◽  
Testing Machine ◽  
Fatigue Loading ◽  
Maximum Load ◽  
Fatigue Behaviour ◽  
Control Mode ◽  
Static Properties ◽  
T Joints ◽  
Pull Out ◽  
Reinforced Composite

In this paper a study was carried out on the fatigue life of fibre-reinforced composite T-joints subjected to a tensile pull-out loading. The composite T-joints have been made of glass fabric infused with epoxy resin using a vacuum assisted resin transfer moulding technique. Methods such as the use of veil layers, tufting techniques and 3D weave have been employed to improve the interlaminar fracture toughness of the composite T-joints. All the tests were conducted in an Instron testing machine using a specially designed test fixture. Fatigue tests were performed in a load control mode with a stress ratio of R = σmin/σmax = 0.1. The cyclic loading pattern was a sinusoidal wave with a frequency of 6 Hz. The specimens were cycled at a series of constant maximum load values up to failure. Fatigue loads versus life data for each T-joint type were produced at various maximum applied loads. The 3D weave T-joints were found to have the best performance in both static and fatigue loading. Increasing the static properties increases fatigue life performance; the increasing rate in fatigue life is changed with the number of stress cycles. The location for the through-thickness reinforcement plays an important role in improving fatigue life of the Tjoints. Fatigue life is significantly improved if the web is reinforced in through-thickness direction. A finite element (FE) failure model was also created using ABAQUS to determine the location where delamination is initiated and its subsequent propagation.

Hydraulic Jack operated Hose Crimping Machine

2015 ◽  
Vol 3 (8) ◽  
pp. 455-458
Author(s):  
Dr Dinesh Keloth Kaithari
Keyword(s):  
Literature Review ◽  
Safety Factor ◽  
Working Condition ◽  
Electrical Power ◽  
Hydraulic Jack ◽  
Critical Components ◽  
Parts Fabrication

The present paper deals with developing of a crimping machine that can crimp hydraulic hoses with its fitting without the use of electricity. Detailed literature review indicates the fabrication of crimping machine that operates with electricity that inspired the authors to develop a hydraulic crimping machine that works without electrical power. Such a crimping machine is very useful when the rig is in movement and suitable for emergency crimping work in order to avoid shutdown time.The author has used Autodesk inventor software for designing critical components of the machine and obtained safety factor more than one for all the critical components. Safety factor less than one leads to the unsafe working condition of the critical parts. Fabrication of the whole assembly has been completed successfully for the required crimping for a hose size of 19.05 mm. The crimping machine has been tested successfully for crimping the required hose size. The design of the machine can be altered so that it can accommodate different die sizes in order to crimp hoses of different sizes.

Quality management and economic downturn. Post-modern topics of community psychiatry

2016 ◽  
Vol 33 (S1) ◽  
pp. S565-S565
Author(s):  
A. Zangrando ◽  
F. Babici ◽  
E. Pascolo-Fabrici ◽  
A. Riolo
Keyword(s):  
Mental Health ◽  
Quality Management ◽  
Community Psychiatry ◽  
Health Workers ◽  
Mental Health Workers ◽  
Economic Downturn ◽  
The Social ◽  
Competing Interest ◽  
Implicit And Explicit ◽  
Demand For Health

IntroductionThe reduction of the budget allocated to community psychiatry is part of financial needs in times of economic crisis. However, the community psychiatry is based on human resources rather than on technological devices and the economic downturn affects the quality of care in a field where the social and relational capital developed by mental health workers is fundamental. Some authors such as Serge Latouche propose to stem the economic decline with the concept of “degrowth”, a constructive idea but difficult to apply.ObjectiveWe would like to analyze whether the economic downturn has consequences only for the organization of psychiatric services or even for people with severe mental disorders. Another issue concerns the possibility that economic downturn increases the social exclusion of vulnerable people.ResultsPeople who live on social welfare or disability pension remain on the margins of society but also those supported by families feel increasingly marginalized with respect to the future.ConclusionsThe provision of mental health services may not meet the implicit and explicit wishes in the demand for health by citizens and society. It's therefore necessary to review the quality management within community psychiatry.Disclosure of interestThe authors have not supplied their declaration of competing interest.

scholarly journals The health workforce: central to an effective response to the COVID-19 pandemic in Europe

2021 ◽  
Vol 31 (Supplement_3) ◽  
Author(s):  
T Zapata ◽  
J Buchan ◽  
N Azzopardi-Muscat
Keyword(s):  
Health Workforce ◽  
New Technologies ◽  
Health Workers ◽  
Team Work ◽  
Effective Response ◽  
Secondary Sources ◽  
Short Period ◽  
Increasing Demand ◽  
Demand For Health ◽  
Skills Shortages

Abstract Background COVID-19 has reinforced the centrality of health workers at the core of a well performing and resilient health system. It has concomitantly exposed the risks of staffing and skills shortages and the importance of protecting the health workforce. This paper focuses on highlighting some of the lessons learnt, challenges and future needs of the health workforce in Europe in the context of COVID-19. Methods We use secondary sources and expert information. Results During the pandemic innovative and flexible approaches were implemented to meet increasing demand for health workers and new skills and responsibilities were adopted over a short period of time. We have seen the rapid adaptation and use of new technologies to deliver care. The pandemic has underlined the importance of valuing, protecting and caring for our health workforce and the need to invest appropriately and adequately in the health workforce to have sufficient, capable and well-motivated health workers. Some of the main challenges that lie ahead of us include the imperative for better investment, to need to improve recruitment and retraining whilst better retaining health workers, a focus on domestic sustainability, redeploying and developing new skills and competences among health workers, enabling more effective multi-professional collaboration and team work, improving the quality of education and training, increasing the public health focus and promoting ethical and sustainable international recruitment of health workers. Conclusions The WHO European Region through its European Programme of Work 2020-2025 is fully committed to support countries in their efforts to continue to respond to COVID-19 and whilst addressing upcoming health workforce challenges.

scholarly journals ANALISIS KESTABILAN LERENG DENGAN SOFTWARE ROCSCIENCE SLIDE

2018 ◽  
Author(s):  
Darmadi Ir
Keyword(s):  
Stability Analysis ◽  
Slope Stability ◽  
Case Studies ◽  
Safety Factor ◽  
Factor Of Safety ◽  
Slope Angle ◽  
Maximum Load ◽  
Slope Stability Analysis

Abstract Slope stability analysis with SOFTWARE ROCSCIENCE SLIDE case studies in residential barracks of PT. Freport with various variations in loading and conditions show results The greater the load on the slope, the lower the Factor of Safety value. FS values for all methods, sections, and ramp widths are greater in dry than wet conditions. The greater the load distance from the slope, the greater the FS value. At a distance of 3m from the crest slope the decrease in FS value is very significant, in sections 1 and 2 there is still a secure FS value with a load of 50 kN / m, the smaller the overall slope angle (slope) the greater the FS value.Keywords: Slope stability, safety factor, maximum load

scholarly journals Twist-to-Bend Ratios and Safety Factors of Petioles Having Various Geometries, Sizes and Shapes

2021 ◽  
Vol 12 ◽  
Author(s):  
Max Langer ◽  
Mark C. Kelbel ◽  
Thomas Speck ◽  
Claas Müller ◽  
Olga Speck
Keyword(s):  
Safety Factor ◽  
Flexural Rigidity ◽  
Load Capacity ◽  
Torsional Rigidity ◽  
Maximum Load ◽  
High Twist ◽  
Safety Factors ◽  
Bending Tests ◽  
3 Dimensional ◽  
Spatial Configurations

From a mechanical viewpoint, petioles of foliage leaves are subject to contradictory mechanical requirements. High flexural rigidity guarantees support of the lamina and low torsional rigidity ensures streamlining of the leaves in wind. This mechanical trade-off between flexural and torsional rigidity is described by the twist-to-bend ratio. The safety factor describes the maximum load capacity. We selected four herbaceous species with different body plans (monocotyledonous, dicotyledonous) and spatial configurations of petiole and lamina (2-dimensional, 3-dimensional) and carried out morphological-anatomical studies, two-point bending tests and torsional tests on the petioles to analyze the influence of geometry, size and shape on their twist-to-bend ratio and safety factor. The monocotyledons studied had significantly higher twist-to-bend ratios (23.7 and 39.2) than the dicotyledons (11.5 and 13.3). High twist-to-bend ratios can be geometry-based, which is true for the U-profile of Hosta x tardiana with a ratio of axial second moment of area to torsion constant of over 1.0. High twist-to-bend ratios can also be material-based, as found for the petioles of Caladium bicolor with a ratio of bending elastic modulus and torsional modulus of 64. The safety factors range between 1.7 and 2.9, meaning that each petiole can support about double to triple the leaf’s weight.

scholarly journals Design and Performance Analysis for the Low-Power Holding Mechanism of the All-Electric Subsea Gate Valve Actuator

2020 ◽  
Vol 10 (17) ◽  
pp. 6119
Author(s):  
Honghai Wang ◽  
Peng Jia ◽  
Liquan Wang ◽  
Feihong Yun ◽  
Gang Wang ◽  
...  
Keyword(s):  
Low Power ◽  
Gate Valve ◽  
Production Control ◽  
Maximum Load ◽  
Design Parameters ◽  
Production Control System ◽  
Design Variables ◽  
And Performance ◽  
Critical Components ◽  
Analytic Models

The all-electric subsea gate valve actuator is one of the critical components of the all-electric subsea production control system. To bridge the gap of the low-power holding mechanism in the all-electric subsea gate valve actuator of the subsea production system, minimize the power consumption and cable number for control and improve the open-position keeping performance of all-electric subsea gate valve actuator, this paper proposed a novel low-power holding mechanism for the all-electric subsea gate valve actuator which can be applied to all-electric subsea gate valve actuators with various valve sizes and process pressure ratings. The proposed low-power holding mechanism uses an electromagnet as a driving element, combines the spiral transmission and the cam-like transmission, and only requires a holding force of approximately 2–7% of the maximum load of the closing spring to keep the valve open. The proposed low-power holding mechanism converts the axial force of the closing spring into the circumferential force, which substantially reduces the output force required for the driving element of the low-power holding mechanism and the number of the actuator’s control cables. Analytic models are created for the lockable maximum load of the closing spring and the permissible stroke of the locking tab with regard to the design variables. The parameter effects and the corresponding sensitivities are discussed by numerical analysis. The design parameters and the lockable maximum load of the closing spring of the low-power holding mechanism are obtained.

Influence of the second-generation adaptive friction clutch configuration method (basic version) for its maximum load

2020 ◽  
pp. 552-557
Author(s):  
M.P. Shishkarev
Keyword(s):  
Safety Factor ◽  
Coefficient Of Friction ◽  
Second Generation ◽  
Maximum Load ◽  
Maximum Torque ◽  
Minimum Value ◽  
Average Coefficient ◽  
Friction Clutch ◽  
The Coefficient Of Friction ◽  
Basic Version

It is shown that the maximum torque of adaptive friction clutches of the second generation (baseline) when it is configured with the minimum coefficient of friction less than the setting based on an average coefficient of friction, if a ratio of the coefficient of friction to its minimum value more than the value of the safety factor.

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