Electrical discharge machining (EDM) involves using electrical sparks to erode metal surfaces. Key aspects include:
1) An electrode is used to shape electrical discharges that melt and vaporize small amounts of material from the workpiece. Common electrode materials include copper, tungsten, and graphite.
2) A dielectric fluid is used to separate the electrode and workpiece and to flush away debris. Typical fluids include oil-based fluids like kerosene.
3) An electrical charge creates sparks that momentarily melt and vaporize metal. Process parameters like voltage, gap size, and flush rate must be optimized to control the erosion process.
Non-traditional manufacturing processes is defined as a group of processes that remove excess material by various techniques involving mechanical, thermal, electrical or chemical energy or combinations of these energies
Non-traditional manufacturing processes is defined as a group of processes that remove excess material by various techniques involving mechanical, thermal, electrical or chemical energy or combinations of these energies
One of the welding processes that used in Engineering field is the resistance welding. There are several types of welding processes similar to this, but resistance welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Electron Beam Welding is a fusion welding process in which a beam of high-velocity electrons is applied to the material to be joined. The work-piece melt as the kinetic energy of the electrons is transformed into heat upon impact. The EBW process is well-positioned to provide industries with highest quality welds and machine designs that have proven to be adaptable to specific welding tasks and production environments.
it is a presentation on electrical discharge machining which is new method for machining hard conductive materials which are difficult to machine with old technique of machining. it does not cause wear of tool.
One of the welding processes that used in Engineering field is the resistance welding. There are several types of welding processes similar to this, but resistance welding has its unique features.
Thanks for the colleagues who give this slides to publish.
Electron Beam Welding is a fusion welding process in which a beam of high-velocity electrons is applied to the material to be joined. The work-piece melt as the kinetic energy of the electrons is transformed into heat upon impact. The EBW process is well-positioned to provide industries with highest quality welds and machine designs that have proven to be adaptable to specific welding tasks and production environments.
it is a presentation on electrical discharge machining which is new method for machining hard conductive materials which are difficult to machine with old technique of machining. it does not cause wear of tool.
Electrical Discharge Machining of Ti-6Al-4VSahil Dev
In this study, the electrical discharge machining (EDM) of titanium alloy (Ti–6Al–4V) with different electrode materials namely, graphite, copper and aluminium and process parameters such as, pulse current and pulse duration were performed to explore the influence of EDM parameters on various aspects of the surface integrity of Ti6Al4V.
UCM-Unit 3 CHEMICAL AND ELECTRO-CHEMICAL ENERGY BASED PROCESSESShanmathyAR2
Chemical machining and Electro-Chemical machining (CHM and ECM)- Etchants – Maskant -
techniques of applying maskants - Process Parameters – Surface finish and MRR-Applications.
Principles of ECM- equipments-Surface Roughness and MRR Electrical circuit-Process Parameters- ECG and ECH - Applications.
In this pdf you will learn how the x ray machines work and how x rays produce, to enhance your knowledge about x rays machine then you have read this. You will get every knowledge about xrays in short and easy language.
Electro Discharge Machining
Introduction
Process
Process Parameters
Dielectric
Advantages of EDM
APPLICATIONS
Power generator
Wire EDM
ELECTRIC DISCHARGE GRINDING (EDG)
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Kubernetes & AI - Beauty and the Beast !?! @KCD Istanbul 2024Tobias Schneck
As AI technology is pushing into IT I was wondering myself, as an “infrastructure container kubernetes guy”, how get this fancy AI technology get managed from an infrastructure operational view? Is it possible to apply our lovely cloud native principals as well? What benefit’s both technologies could bring to each other?
Let me take this questions and provide you a short journey through existing deployment models and use cases for AI software. On practical examples, we discuss what cloud/on-premise strategy we may need for applying it to our own infrastructure to get it to work from an enterprise perspective. I want to give an overview about infrastructure requirements and technologies, what could be beneficial or limiting your AI use cases in an enterprise environment. An interactive Demo will give you some insides, what approaches I got already working for real.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
5. • An electrically conductive electrode
• Shaped to match the dimensions of the desired cavity or hole
• Connected to the pole of the supply
- copper
- tungsten
- graphite
6. • Dielectric---insulating fluid
• Gap --- workpiece and tool are separated by a
small gap flooded by dielectric to provide
a controlled electrical resistant
7.
8. An increasing voltage is applied to the electrodes,
resulting in an increasing stress on the fluid between
them until it is ionized, and the gap becomes
conductive, allowing current to flow from one electrode
to the other in the form of a spark discharge .
9. The spark channel in the first few microseconds has a
very small cross-sectional area resulting in a
correspondingly high current density calculated to be on
the order of l04
~l06
A /cm2
.
10. • Because of these extreme densities, the temperature in
the channel is very high, (5,000-l0,000 ),℃ resulting in
the melting and vaporization of a small amount of
material from the surfaces of both the electrode and the
workpiece at the points of spark contact, a rapidly
expanding bubble is created in the dielectric fluid
around the spark channel.
11. • When the electrical pulse is terminated, both the spark
channel and the vapor bubble collapse.
• The violent inrush of cool dielectric fluid results in an
explosive expulsion of molten metal from both the
electrode and workpiece surfaces, resulting in the
formation of a small crater in the surfaces of the two
conductors, solidifying hollow balls of material, which are
removed from the gap by the fluid.
12. • Suitable choice of polarity
• Suitable choice of electrode material
• Suitable choice of the operating parameters
13. • In EDM, therefore, the cathode-electrode is made the
workpiece
• The anode becomes the tool
• The erosion of metal from the cathode can be as high
as 99.5%
• The wear of the anode being kept as low as 0.5%.
14. - Fluid is used to act as a dielectric, and to help carry
away debris.
- If the fluid is pumped through and out the end of the
electrode, particles will push out, and mainly collect at
the edges. They will lower the dielectric resistance,
resulting in more arcs. As a result the holes will be
conical.
- If fluid is vacuum pumped into the electrode tip,
straight holes will result.
15.
16. • Quite often kerosene-based oil.
• Paraffin and light oils, (cheap, low viscosity, and a flash
point high enough to make them safe to work
• The fluid must be cleaned, recycled, and returned to the
cutting gap by means of pumps and filters.
17. • The electrode workpiece gap is in the range of 10 micro m to
<100 micro m.
• Uses a voltage discharge of 60 to 300 V to give a transient
arc lasting from 0.1 micro s to 8 ms.
• Typical cycle time is 20 ms or less, up to millions of cycles
may be required for completion of the part.
18. • High temperature, but easy to machine, allowing easy
manufacture of complex shapes.
• Low wear rate, be electrically conductive,provide good
surface finishes on the workpiece, and be readily available.
19. - Energy density (lower to higher)
- Amount machined (less to more)
- Machining speed (slower to faster)
- Clearance (less to more)
- Surface roughness (fine to rough)
21. • A thin wire of brass, tungsten, or copper is used
as an electrode.
• Deionized water is used as the dielectric.
22. - Mechanism of material removal - melting and evaporation
aided by cavitation
- Medium - dielectric fluid
- Tool materials - Cu, Brass, Cu-W alloy, Ag-W alloy, graphite
- Material/tool wear = 0.1 to 10
- Gap = 10 to 125 micro m - maximum mrr = 5*103
mm3
/min
- Specific power consumption 1.8 W/mm3
/min
- Critical parameters - voltage, capacitance, spark gap,
dielectric circulation, melting
temperature
- Materials application - all conducting metals and alloys
- Shape application - blind complex cavities, microholes for
nozzles, through cutting of non-circular
holes, narrow slots
23. • High specific energy consumption (about 50 times that
in conventional machining);
• When forced circulation of dielectric is not possible,
removal rate is quite low;
• Surface tends to be rough for larger removal rates;
• Not applicable to nonconducting materials.
• Electrical Discharge Machining Used on hard metals
• works with electrically
• conductive materials
26. • Miniature Part
• Titanium needles
• Precision die Matching
• Prototype production
• Coinage die making
• Small hole drilling
• Closed loop manufacturing
• Metal disintegration machining
27. Future Work o
• Minimise power consumption
• High rate of material removal
• Minimise specific power consumption
• Additional time and cost used for creating
• Electroade wear
Future WorkFuture Work