Digital Manufacturing and Materials Characterization Laboratory (DMMC Lab)

The newly equipped Digital Manufacturing and Materials Characterization Laboratory (DMMC Lab) is available for students of Strategic Product Design programme to use under the guidance of technically competent personnel.

The Laboratory is also used for external collaborations with industry partners, funded research projects and other academic activities. Lab’s equipment is summarized as follows:

Additive Manufacturing Technologies

  • 3D Printer Fused Deposition Modeling (FDM) technology with 50μm precision, with independent dual extrusion capabilities
  • 3D Printer Composite Filament Fabrication (CFF) technology with 100μm precision, with reinforcement of Carbon Fiber, Fiber Glass and Kevlar.
  • 3D Printer Liquid-Crystal Display (LCD) technology with 10μm precision, compatible with 3rd party resins and instant curing in each layer
  • 3D Printer Stereolithography (SLA) technology with 25μm precision, with a variety of different resins such as Castable, Flexi etc.
  • 3D Printer Selective Layer Sintering (SLS) technology with 100μm precision and post processing equipment (automated sieve and sandblasting apparatus)

Subtractive Manufacturing Technologies

  • 4-axis Computer Numerical Control (CNC) ideal for wood, plastic and acrylic materials with Coordinate Measurement Machine (CMM) sensor attached to it
  • 40 Watt Laser Cutter CO2 for cutting and engraving a variety of materials (wood, plastic, carton, cork, acrylic etc.)

3D Scanning Technologies

  • Portable White Light technology 3D Scanner with 500microns precision, 16fps and texture scanning capabilities
  • Desktop Laser technology 3D Scanner with 100microns precision, texture scanning capabilities and automated turntable for a 360o scanning
  • Portable Kinect Sensor with texture scanning capabilities

Advanced Materials Testing Apparatuses

  • Tensile testing machine equipped with load cells 500N and 50kN, capable of performing tensile, compression, bending tests, shear puncture, cyclic as well as Brinell Hardness tests.
  • Data acquisition apparatus with strain gauges and Linear Variable Differential Transducers (LVDT) attached to Tensile testing machine
  • Dynamic Ultra Micro Hardness Tester, equipped with Berkovich indenter and micro-compression capabilities with 10nm and 100nm flat-section indenters.

Microscopy Analysis

  • Desktop Scanning Electron Microscope (SEM) with magnification range 160x-150.000x and resolution ≤8nm, with several analysis software
    • Energy-Dispersive X-Ray (EDX) Analysis
    • Elemental Mapping Analysis
    • Particle Analysis
    • Poro-Metric Analysis
    • Fiber-Metric Analysis
    • 3D Roughness Reconstruction
  • Digital optical microscope with magnification range 20x-200x
  • Stereomicroscope of 225x magnification and digital camera attached to it

Supplementary Equipment

  • Ultrasonic Processor for nanomaterials dispersion
  • Infrared Thermo-Camera with object Temperature Range -40oC – +650oC
  • Air-circulated drying and heating oven up to 380oC
  • Desktop automated microtome up to 30x40mm workpiece and accuracy of ±0.01mm
  • Grinding and Polishing machine with self-cooling system
  • Mini Sputter Coater with Au, Au/PD and Carbon coating capabilities, fitted with glow-discharged function
  • Desktop Extruder with Spooler, suitable for production of experimental FDM filaments

Advanced Software

  • Computer Aided Design (CAD): SolidWorks 2020-21, Rhinoceros 5.0
  • Computer Aided Engineering (CAE): ANSYS 19, Spaceclaim
  • Computer Aided Manufacturing (CAM): SolidCAM 2020-21
  • 3D Scanning software: Artec Studio Professional 11, ScanStudioHD
  • Graphic Design Software: Adobe Photoshop

New: The International Hellenic University responds rapidly to the fight against COVID-19 by printing 3D protective face shields

The Digital Manufacturing and Materials Characterization (DMMC) Laboratory of the Department of Science and Technology, International Hellenic University (IHU), in order to support doctors and medical staff in their difficultdaily battle against COVID-19, joined forces with the Robotics Laboratory of the Department of Industrial Engineering and Management of the IHU and organized the production of 3D Printed Protective Face Shields for COVID-19 in collaboration with the Centre for Research and Technology Hellas (CERTH) and 3D printing companies (AniMa-The 3D Printer Experts, G-Code, Thes3D, Quick3Dparts και Retouch-Health Solutions).

290 protective shields were delivered on 08/04/2020 and more specific 190 to AHEPA General Hospital and 100 to Georgios Papanikolaou General Hospital both treating patients with COVID-19 in Thessaloniki.

The protective face shields consist of a crown which is produced in a 3D printer using PLA as printing material, a biocompatible material which can be easily sterilized, and a transparent PET membrane. The PET membrane is cut to the exact dimensions by laser cutting machines and placed on the 3D printed crown, offering complete protection to the face and can be used multiple times when wiped down and sanitized.

At the moment, 270 more shields are printed which will be delivered to AHEPA and Papanikolaou hospitals later this week.