Rheology and processing of polymer nanocomposites with graphene and other 2D materials
Dr. Ricardo Andrade
Mack Graphe Centre, University Mackenze, Sao Paolo, Brazil
The seminar will be held on 5-th June 2018 (Tuesday) at 1 pm in hall 200.
Assoc. Prof. Roumen Krustev Secretary of the Joint Seminar
Announcements
Request for associated partner in project proposals Center of Competence at thematic area “Mechatronics and Clean Technologies” leaded by Institute of Mechanics – BAS.
Equipment
Laboratory for testing of materials (LTM)
Room 61, Acad. G. Bontchev St., bl. 4, 1113 Sofia, Bulgaria
Assoc. Prof. Eng. Rumen Krastev, Ph.D, Mechatronics Phone +3592-979-6450, +359-889-701-105, e-mail: r_krastev@imbm.bas.bg
LTM is an experimental research laboratory at the Institute of Mechanics at the Bulgarian Academy of Sciences. LTM performs:
• Organizing and conducting mechanical tests of samples of materials and various (machine, mechatronic) components,
• Processing and analysis of experimental results,
• Preparation of protocols, reports and reports,
• Preparation of a forecast for the long-term strength of polymeric materials under constant load, based on data from short-term experiments.
Tests for scientific purposes, by initiative of colleagues from IMech, are carried out after discussion and negotiation of the experiment, with their assistance to provide the necessary samples and, if necessary - additional devices.
LTM organizes and performs tests on behalf of external contractors. A contract is concluded for each experimental work. The available equipment and the basic package of experimental methods are described in the following tables:
EQUIPMENT
|
Type, model, manufacturer |
Measurement unit, range |
Uncertainty |
|
Material testing machine TIRA test 2300 TIRA GmbH |
Force, 1 kN, 10 kN Displacement, Т1: 0.080 mm, 0.8 mm, 2.5 mm T3+lever: 1 mm, 10 mm, 30 mm |
1%
0.001 mm, 0.004 mm 0.004 mm, 0.02 mm, 0.04 mm |
|
Multipoint measuring instrument, UPM 60 Hottinger Baldwin Messtechnic |
Surface strain, 2% |
2% |
|
Digital Multimeter D470 Protec |
Voltage DC, 400 mV .. 1000 V AC, 4 V .. 750 V Current DC 40 mA .. 10 A AC 40 mA .. 10 A Frequency, 200 Hz .. 200 kHz Capacitance, 10 µF .. 10 mF Temperature, -40 .. 1300 oC |
0.3% 0.75% - 2.5% (depends on the range) 0.5% - 0.75% 0.75% - 1.5% 0.05% 2% 1.5 oC |
|
Digital Multimeter 3415 USB PeakTech |
Voltage DC, 600 mV .. 1000 V AC, 600 mV .. 1000 V Current DC 600 µA .. 10 A AC 600 µA .. 10 A Resistance 600 Ω .. 60 M Ω Frequency, 100 Hz .. 10 kHz Capacitance, 600 nF .. 300 µF Temperature, -55 .. 1000 oC |
0.5% - 1.0% 1.0% - 1.5% (зависи)
1.5% 1.8% - 3.0%
0.5% - 1.5% 0.05% 5% 2% + 3 oC |
|
Device for measuring deflection of a specimen under three-point flexure test. Own development. |
Deflection on the neutral line 100 µm 2 mm 10 mm |
0.6 µm 0.02 mm 0.05 mm |
|
Testing machine - zd10/90 VEB THŰRINGER INDUSTRIEWERK RAUENSTEIN |
Force, 1000 kg |
2% |
|
Testing machine for compressive strength - wpm-60 t VEB Werkstoffprűfmachinen Leipzig |
Force, 60 t |
2% |
TIRAtest 2300. Measurement of Neutral Line Sagging with Three-Point Short Beam
Tested products and characteristics
|
Tested products |
Characteristics |
Methods (Standards) |
|
Concrete prisms, 40х40х160 mm |
Compressive modulus of elasticity |
EN 13412:2006 |
|
Concrete prisms, 40х40х160 mm |
Flexural strength (1 point or 2 point loading) |
EN 12390-5:2009 ASTM C78-09 |
|
Concrete prisms, 40х40х160 mm |
Modulus of elasticity, flexural test, short beam |
Device for measuring deflection of a specimen under three-point flexure test. + Timoshenko’s theory |
|
Plastic
|
Compressive strength, elastic modulus |
EN ISO 604:2003 |
|
Plastic tripe
|
Tensile strength, elastic modulus |
EN ISO 527-3:1995 |
|
Plastics, lo/h >= 16
|
Flexure strength, elastic modulus |
EN ISO 178:2003 |
|
Plastics, metals, short beam, long beam |
Elastic modulus for three-point flexure test |
Device for measuring deflection of a specimen under three-point flexure test. + flexure beam theories |
|
Plastic
|
Creep characteristics (tension, bending) |
EN ISO 899-1:2004 |
|
Plastic
|
Prediction of the long-term strength, based on short-term tests. |
Laboratory method |
|
Heat insulations |
Stress at 10 % relative deformation, elasticity |
EN 826:1996 |
|
Polymeric materials, cellular, flexible, low density |
Stress-strain characteristics in compression |
EN ISO 3386-1:1986 |
|
Concrete, Cubes with side 100 mm or 150 mm, 3 pieces |
Compressive strength |
EN 206:2013+A1:2016 |
|
40х40х160 mm prisms, 3 pieces |
Tensile strength in bending |
EN 12390-5:2019 |
LABORATORY OF OPTICAL AND LASER METROLOGY
Assen Shoulev, Simeon Karpuzov
More than 25 years in the optical laboratory of IMech, the mechanical properties and characteristics of different objects, materials, and mechatronic systems have been successfully studied. Recently various composite materials have been explored for the purpose of civil engineering and the results have found application in the modern European industry. The latest research projects were focused on development and investigation of Micro Electro Mechanical Systems, Micro Fluidic Devices, Micro Manipulation of Biological Cells, and Robotic Systems for Invitro Fertilization.
During the last 10 years we have published more than 50 articles and participated in 10 scientific projects.
 |
 |
 |
Our optical laboratory consists of two equipped rooms suitable for conducting precise optical experiments and two auxiliary rooms. The laboratory has a large concrete vibrо-isolated table, several granite and metal optic benches with universal and specialized riders and holders, lasers, variety of optical components, digital cameras, precise position modules, optomechatronic systems, controllers, electronic measurement equipment, computers, etc.
Small part of the existing equipment
Developed scientific research techniques and methods:
- Interferometry;
- Moire Projection;
- Digital holography;
- Digital Image Correlation;
- Speckle;
- 3D scanning;
- Computer vision;
- Image and signal processing;
Services:
- Consultancy in the field of optical and laser metrology;
- Design and realization of opto-mechatronic systems with application in industry, biology and medicine;
- Sub-microbial accuracy non-destructive and non-contact measurement of the displacement fields during deformation of macro and micro objects;
- determination of potential zones with increased risk for potential damage, breakage, and cracking;
- Comparative analysis of optical elements;
- Roughness measurement of complex materials;
- Calibration of Mechatronic and / or Robotic Systems;
-Micro force measurements;
- vision control systems, algorithms, and software applications;
- Software, algorithms, and systems for qualitative and quantitative 3D profile assessment;
- Software and algorithms for signal and image processing.
LABORATORY OF BIOMECHATRONICS
Apparatus and specialized equipment
Assoc. prof. Ivanka Veneva
|
Name, type, manufacturer |
Description |
|
Noraxon MyoMotion, Velamed Science Motion. |
Noraxon Inertial Sensor System- 7-Sensor, Up to 200Hz sampling rate for 16 sensors, 30m range, 7 myoMOTION Research Pro sensors MR3 myoMOTION software module, 1 Research Pro receiver |
|
Noraxon DDTS, Velamed Science Motion. |
8 channel Desktop DTS EMG system with 8 wireless EMG sensors for analysis of neuromuscular activity by measuring the electrical potentials of the muscles |
|
FDM-T SciFit, Zebris, Velamed Science Motion. |
Treadmill Instrumented deck with 5376 Capacitive Sensors, 22" x 62" Treadbelt, Backlit LCD Display, Measuring range 1-120N, 3.0 continuous horsepower motor, Sampling rate of 100Hz |
|
MR3 software Noraxon Research |
MR3 myoMUSCLE software module MR3 myoPRESSURE-T software module MR3 MyoMotion software module |
|
NI USB 6225, National Instruments |
DAQ, Multifunction I/O Device, USB, 16-bit, 80-channel, 250 kS/s sampling rate, two 32‑bit counters/timers, and digital triggering. 80 AI (16-Bit, 250 kS/s), 2 AO (833 kS/s), Up to 24 DIO, |
|
NI USB 6211, National Instruments |
DAQ, Мultifunction I/O Device, USB 16 AI (16-Bit, 250 kS/s), 2 AO (250 kS/s), 4 DI, 4 DO, USB It offers analog I/O, digital input, digital output, and two 32‑bit counters. |
|
9620-05-DAQ, ATI Industrial automation |
F/T Data Acquisition (DAQ), Six-Axis Force/Torque Sensor System, IFPSMC-3: Multi-sensor interface box for (3) F/T sensors, |
|
OptiTrack V120:Trio 800nm IR Long-pass & Filter Switcher, Natural Point, |
OptiTrack cameras with tracking and vision applications suit, reflective balls, markers and accessoires |
|
Oculus SDK, Oculus Rift |
Virtual helmet + Oculus Touch a new generation of virtual reality helmet, including a head movement tracking system and Oculus Touch |
|
3D printer, Leapfrog |
3D printer for fast prototyping |
|
Еxoskeleton for Upper Limbs |
Active Orthosis actuated by pneumatic actuators and controllers with force-feedback. А haptic device with force-reflecting interface that can display sensory information from a virtual reality to the user. |
|
Еxoskeleton for Lower Limbs |
Active Orthosis actuated by pneumatic artificial muscles and adjustable joint torque; Аssistive locomotion device |
|
Exointerface |
Graphic user interface for exoskeleton calibration, communication and interaction with virtual reality. Exoskeleton can operate in three modes: - Assistive Mode in cases of impaired muscles - Motion tracking system with data exchange with virtual reality - Haptic and rehabilitation device |
Modified date:30-09-2021