November 24, 2017

Projekt Tehničkog fakulteta dobitnik nagrade Moj ZABA Start natječaja

Projekt “Razvoj mehatroničkog uređaja za rehabilitaciju pacijenata sa smanjenom funkcionalnošću gornjih ekstremiteta” istraživačke skupine s Tehničkog fakulteta u Rijeci, u suradnji s KBC-om te Medicinskim fakultetom u Rijeci, prijavljen na natječaj Zagrebačke banke “Moj ZABA Start“, odabran je kao dobitnik treće nagrade i 80.000 kuna u kategoriji “Kultura i znanost“. U predmetnoj kategoriji prijavljeno je bilo ukupno 209 projektnih prijava, dok je u svim kategorijama ukupno bilo 680 projektnih prijava od kojih je samo njih 11 na kraju osvojilo donacije.

U nagrađenom projektu sudjeluju prof. dr. sc. Saša Zelenika, izv. prof. dr. sc. Kristijan Lenac, dr. sc. Ervin Kamenar, asistenti Petar Gljušćić i Tea Arrigoni s Tehničkog fakulteta u Rijeci i Centra za mikro- i nanoznanosti i tehnologije Sveučilišta, te prof. dr. sc. Tea Schnurrer Luke Vrbanić s Medicinskog fakulteta i KBC-a Rijeka.

 

http://www.mojzabastart.hr/home/tko-su-dobitnici

http://novilist.hr/Promo-sadrzaji/Zaba-proglasila-pobjednike-natjecaja-Moj-Zaba-Start

https://www.vecernji.hr/biznis/za-inovativne-projekte-milijun-kn-1203699

http://www.jutarnji.hr/Promo/zaba-proglasila-pobjednike-natjecaja-moj-zaba-start/6690393/

http://www.uniri.hr/index.php?option=com_content&view=article&id=6604%3Atrea-nagrada-projektu-riteh-a&catid=1%3Avijesti&lang=hr

http://www.riteh.uniri.hr/novosti/projekt-tehnickog-fakulteta-dobitnik-nagrade-moj-zaba-start/

https://www.tkokaze.hr/novosti/proglaseni-pobjednici-natjecaja-moj-zaba-start/

https://cropix.hr/index.php?menuid=gallery_cropix&gid=111811

http://www.bug.hr/vijesti/zaba-proglasila-pobjednike-natjecaja-moj-zaba-star/162839.aspx

https://lider.media/ukratko/foto-proglaseni-pobjednici-natjecaja-moj-zaba-start/

https://www.vecernji.hr/kultura/deset-kulturnih-i-znanstvenih-projekata-u-finalu-nagrade-moj-zaba-start-1199234

PrecEng team members presented their work at the My First Conference held on RiTeh

Our team members M. Sc. Tea Arrigoni, M. Sc. Petar Gljuščić and M. Sc. Marko Perčić presented the results of their recent work at the “My first Conference” event organized by the Faculty of Engineering, the Faculty of Civil Engineering and the Faculty of Maritime Studies of the University of Rijeka. The conference was held at the Faculty of Engineering itself and organized exclusively for the doctoral students whose research is undergoing.

The presented papers, in the form of extended abstracts, are:

Arrigoni, S. Zelenika, E. Kamenar, T. Schnurrer Luke Vrbanić, K. Lenac “Issues in the mechatronics design of a full arm rehabilitation device” – Paper

P. Gljušćić & S. Zelenika: “Modelling, optimization and application of piezoelectric vibration energy harvesting devices” – Paper

M. Perčić & S. Zelenika: “Issues in characterizing parameters influencing nanometric friction” – Paper

PrecEng istraživačka skupina s Tehničkog fakulteta u Rijeci u finalu natječaja Moj ZABA start

Projekt “Razvoj mehatroničkog uređaja za rehabilitaciju pacijenata sa smanjenom funkcionalnošću gornjih ekstremiteta” istraživačke skupine s Tehničkog fakulteta u Rijeci, u suradnji s Kliničkim bolničkim centrom te Medicinskim fakultetom u Rijeci, prijavljen na natječaj Zagrebačke bankeMoj ZABA Start“, odabran je od strane stručnog povjerenstva kao jedan od 10 finalista u kategoriji “Kultura i znanost“. U predmetnoj kategoriji prijavljeno je ukupno 209 projektnih prijava, dok je u svim kategorijama ukupno bilo 680 projektnih prijava od kojih je 30 ušlo u finale.

U projektnoj prijavi sudjeluju prof. dr. sc. Saša Zelenika, izv. prof. dr. sc. Kristijan Lenac, dr. sc. Ervin Kamenar, asistent Petar Gljušćić, i Tea Arrigoni s Tehničkog fakulteta u Rijeci te prof. dr. sc. Tea Schnurrer Luke Vrbanić sa Zavoda za fizikalnu i rehabilitacijsku medicinu KBC-a Rijeka i Medicinskog fakulteta u Rijeci.

Ukupni fond potpora za kategoriju Kultura i znanost iznosi ukupno 330.000 kn odnosno 120.000 kn za prvu, 100.000 kn za drugu i 80.000 kn za treću nagradu prema odluci Komisije. Četvrta nagrada od 30.000 kn bit će dodijeljena prema odabiru javnosti putem javnog glasovanja na www.mojzabastart.hr.

“Moj Zaba Start kroz različite natječaje podupire najinovativnije i tržišno utemeljene ideje s pozitivnim utjecajem na gospodarstvo i društvo. Pokrenut je 2013. godine te je do sada podržao ukupno 29 najboljih održivih projekata iz različitih područja po ocjeni stručne komisije i prema odabiru javnosti. Dobitnici su inovativni start up-ovi, društveno odgovorne inicijative, projekti iz područja zelenog poduzetništva i kreativne industrije te izrade aplikacija i informatičkih rješenja.”

http://www.mojzabastart.hr/home/

http://www.mojzabastart.hr/home/moj-zaba-start/o-projektu

http://www.mojzabastart.hr/home/tko-su-finalisti-ovogodisnjeg-natjecaja-moj-zaba-start4

Calibration of CNC milling machine tools by laser interferometer

In a collaboration with prof. Zoran Jurković and asist. Graciela Šterpin Valić from the Department of industrial engineering and managment positioning accuracy and repeatability of the X,Y and Z axes of the CNC milling machine were experimentally assessed.

All measurements were made using linear positioning metods. For more accurate repeatability of taking the same position, measurements of axes were performed in 3 cycles. X-axis experimental positioning were performed with 20 mm step for the 500 mm measuring range of the X-axis. Y-axis experimental positioning were performed with 20 mm step for the 320 mm measuring range of the Y-axis. Z-axis experimental positioning were performed with 5 mm step for the 95 mm measuring range of the Z-axis.

The team is currently working on the analysis of the obtained results.

 

Prof. Saša Zelenika become an expert evaluator of the European Commission!

Our member prof. Saša Zelenika was selected as an Expert evaluator of the European Commission (EC) of research infrastructure proposals submitted to the Horizon 2020 EU framework programme calls! Evaluation was held in Bruxelles, Belgimum from June 12th to June 16th 2017.

 

Laboratory @ CMNST Equipping Sponsors

Laboratory equipping was supported by infrastructural ERDF project no. RC.2.2.06-0001: “Research Infrastructure for Campus-based Laboratories at the University of Rijeka – RISK”


         Europska unija

  Ulaganje u budućnost


                                                                                                     


Bruker Dimension Icon Scanning Probe Microscope (SPM)

  • AFM and STM modules in one device.

  • Supports contact and tapping mode (closed loop control keeps the force (deflection of the beam which holds the tip) constant, which limits the contact forces to < 200 pN, i.e. a value far lower than the tapping forces of other devices – PeakForce tapping).

  • Enables measurements of elasticity modulus, adhesion, lateral force (LFM), spectroscopy and force modulation, electrochemical analysis, electric field and magnetic forces, surface potential, piezoelectric force; enables also nanolitography, …

    Option to measure in liquid for biotechnical applications and measurements with heating/cooling of the samples, …

    Imaging of measured data on 5’120 x 5’120 pixels.

  • Samples fixed to the support via a vacuum chuck can be up to few millimetres in size, with bidirectional positioning repeatability of 3 mm on a scanning area of up to 90 x 90 mm.

  • Includes heat (creep < 200 pm/min) and vibration isolation (1” Si damping cushion + compressed air → < 30 pm RMS), microscope and CCD camera, control SW, …

  • PeakForce Tapping™ is an AC imaging technique, i.e., the cantilever is oscillated but well below resonance.

  • This results in a continuous series of force-distance curves.

  • In addition to direct force control by keeping the peak force constant, a multitude of material properties can be extracted and quantified from the force-distance curve at each pixel within an image, such as modulus, adhesion force, and deformation depth.

Examples of measurements – mechanical testing of orthodontic archwires (topographies of NiTi, Rh NiTi and N NiTi):

     

Examples of measurements – ball element and sliding surface of linear guideways:

 

Keysight G200 Nanoindenter

  • The device is thermally as well as dynamically (and acoustically) isolated.

  • Electromagnetic actuation (voice coil principle), i.e. load generation: max 0.5 N with a 50 nN resolution; additional built-in high-load system with 0.1 mN … 10 N load range. Loading system stiffness (guided by leaf springs): 5.106 N/m.

  • Capacitive displacement measurement: resolution < 0.01 nm for > 500 mm displacement range. Obtainable straightness in a

    100 mm range is within 10 nm.

  • 4 samples in a 100 x 100 mm sample holder with a scanning resolution of 0.1 mm and 1 mm accuracy; automatically controlled (closed loop based on incremental encoders). Measurement of elasticity modulus and hardness according to ISO 14577.

  • Enables LFM with a ≤ 2 mN resolution and max lateral force

    ≥ 250 mN. Low-force measurements enable obtaining surface topology after indentation.

  • Berkovich, cube corner, conical, spherical and Vickers tips. System for sample visualization (10x and 40x zoom), microscope with CCD camera and data analysis SW.

Examples of measurements – mechanical testing of orthodontic archwires:

Stratasys Fortus 250mc 3D printer

  • For models with dimension of up to 254 x 254 x 305 mm, with 178 mm layer thickness and positioning accuracy of 240 mm.

  • 2 heads (building and support material).

  • FDM (Fused Deposition Modelling) technology (heating and extrusion of thermoplastics); material: ABSplus (acrylonitrile butadiene styrene).

  • Import of STL (Standard Tessellation Language) 3D models from CAD + SW for printing process optimization (including support structure optimization).

  • An additional 3D printer (Stratasys Connex 500), capable of using up to 14 different materials with different stiffness properties, available at the Faculty of Civil Engineering on same U. of Rijeka campus → PolyJet technology: similar to desktop inkjet printers, with photo polymer material hardened under UV light; printing resolution down to 16 mm.

FDM process:

  • Advantages: laser not needed, fast and secure procedure, lower power consumption, unnecessary cooling and ventilation, simple usage, low investment, low maintenance costs, small size (additional room not needed), warping effect minimised.

  • Disadvantages: surface can be rough and models can have a certain porosity, model functionality is limited by the used material, in many cases the support structure has to be used, additional mechanical processing needed, lines between layers can physically be seen, hardness of the product is lower in the direction of the printed layers, oscillations in temperature during the printing process can lead to delamination of the product; upon warming, melting and solidification processes, ABS can shrink up to few %.

Examples of 3D printed structures:

 

DAVID SLS-2 (Structured Light Technology) 3D Scanner

Structured Light Technology: The distance and the angle of the camera with respect to the projector are known, i.e. distortion of the reflected light pattern (fringes) depends on object’s geometry. Projector + camera + calibration panels + rotating table.

  • 500 mm scanning area,

  • resolution/accuracy 1‰ of the object size,

  • includes SW environment,

  • mobile with tripod,

    enables exporting data to formats compatible with standard CAD SW (e.g. STL).

Examples of measured 3D structures – dental casts:

 

Shimadzu Autograph AGS-X micro-tensile machine

Measurement of mechanical properties (hardness, elasticity modulus, …) of metals, ceramics, polymers, rubber and composites up to 5 kN with 2 mN and 10 µm resolutions.

     

Examples of measurements – measurement of presliding friction of ultra-high precision positioning device:

Examples of measurements – mechanical testing of cured ham:

CNC machine tools for sample preparation

Haas Office series machine tools characterized by small dimensions as well as outstanding performances and exceptional benefits for the end users; include user-friendly interface, HAAS/Fanuc control unit as well as technical support from the Croatian representative company Teximp d.o.o.

Haas Office OM-2A milling machine

  • dimensions within an 1.7 x 0.84 x 1.9 m envelope,

  • enables a 5-axes machining with up to 20 automatically interchangeable tools,

  • machining volume 305 x 254 x 305 mm,

  • 1 µm displacement resolution; spindle velocity of up to 30’000 rpm and 3.7 kW power.

 

Haas Office OL-1 lathe

  • dimensions within an 1.3 x 0.84 x 1.8 m envelope,

  • 4-axes, 12 tools,

  • turning diameter of up to 250 mm,

  • 1µm displacement resolution,

  • spindle velocity of up to 6’000 rpm and power of up to 5.6 kW.

 

 

A system for ultrasonic cleaning of samples for (ultra-high) vacuum

  • Heated (up to 70 °C) prewash with oil separation

  • ultrasound (10 PZT inverters, 40 kHz, 500 W continuous and 2 kW peak power) 45 l heated stainless steel bath for cleaning with a “soft” (pH 9.9) detergent and with filtering of media (particles’ separation)

  • 2 baths for rinsing in demineralized water with heating (1.2 kW, 30 … 80 °C)

  • drying with hot air (up to 300 °C).

 

Newport opto-mechanics

 

 

 

17th International EUSPEN Conference 2017, Hannover, Germany

Employees of the Precision Engineering Laboratory visited the 17th International conference EUSPEN 2017, held from 29.05. to 02.06.2017. in Hannover, Germany.

In the session Applications of Precision Engineering in Biomedical Sciences, our team presented a poster:

In the session Advances in Precision Engineering and Nanotechnologies, our team presented a poster:

 

Our member prof. Saša Zelenika was a member of the International Scientific Committee as well as the Chair of the session “Advances in Precision Engineering and Nanotechnology”.