Tests outside the scope of accreditation

Tests per­for­med at LBM out­side the scope of accre­di­ta­tion:

  • Ban­dwidth test
  • Tests of macro­hard­ness of metals and their alloys and welded joints non-irra­dia­ted and irra­dia­ted with the Bri­nell method
  • Tests of micro­hard­ness of metals and their alloys as well as welded joints with the Vic­kers method
  • Impact test of metals and their non-irra­dia­ted alloys at tem­pe­ra­tu­res from -40°C to + 200°C (test on KLST sam­ples)
  • Making metal­lo­gra­phic spe­ci­mens and sam­ples of metals and their alloys with the WEDM method
  • Testing sur­face and subsur­face discon­ti­nu­ities and testing the thick­ness of coatings with the eddy cur­rent method

Addi­tio­nally, LBM offers the possi­bi­lity of per­for­ming nano­me­cha­ni­cal tests using the nano­in­den­ta­tion method. It is possi­ble to test a wide range of mate­rials with dif­fe­rent phy­si­cal and che­mi­cal pro­per­ties (from super-hard coatings of the WB type, thro­ugh ste­els and alloys, to soft poly­mers of the PTFE type).

The scope of tests:

  • hard­ness and Young’s modu­lus (on the micro- and nano­scale),
  • high tem­pe­ra­ture creep (up to 750°C),
  • deter­mi­na­tion of stress-strain curves,
  • mate­rial strength,

The testing capa­bi­li­ties with the nano­in­den­ta­tion method inc­lude high-tem­pe­ra­ture measu­re­ments (up to 750°C in a con­trol­led Ar atmo­sphere). The tests are car­ried out in the force range from 10 µN to 500 mN (nano­in­den­ta­tion) and from 300 mN to 20 N (micro­in­den­ta­tion). Addi­tio­nally, it is possi­ble to carry out dedi­ca­ted nano­in­den­ta­tion, per­form com­pre­hen­sive nano­tri­bo­lo­gi­cal tests and carry out measu­re­ments of nano­me­cha­ni­cal pro­per­ties in a con­trol­led humi­dity envi­ron­ment.

In addi­tion, LBM measu­res mecha­ni­cal para­me­ters of metals with the Small Punch Testing (SPT) method, in which cylin­der sam­ples have 3 mm dia­me­ter and 0.25 mm thick­ness. The pro­per selec­tion of the test para­me­ters and sys­tem geo­me­try allows for the deter­mi­na­tion of indi­ca­tors pro­por­tio­nal to spe­ci­fic mate­rial cha­rac­te­ri­stics (such as ten­sile strength). The­re­fore, it is an excel­lent method for moni­to­ring mecha­ni­cal pro­per­ties of the mate­rial in use without the need to pre­pare large-size sam­ples. SPT is also widely used as a selec­tion and pro­perty con­trol pro­ce­dure for new mate­rials in the design phase. The small size of the sam­ple allows the deter­mi­na­tion of mecha­ni­cal cha­rac­te­ri­stics and new mate­rials under deve­lop­ment, ava­ila­ble in limi­ted labo­ra­tory volu­mes. The dimen­sions of the sam­ple allow for the exten­sion of the size of the test sam­ple. Measu­re­ments are car­ried out in the force range up to 1 kN at room tem­pe­ra­ture. Tests are car­ried out until the sam­ple is per­fo­ra­ted or until a spe­ci­fic displa­ce­ment is achie­ved.

In 2020, the Mate­rial Rese­arch Labo­ra­tory pur­cha­sed a modern Raman spec­tro­me­ter. This device is equ­ip­ped with a pre­cise measu­ring table that allows set­ting the sam­ple in the XYZ posi­tion with an accu­racy of 20 nm, a 532 nm laser with max. power of 30 mW, an opti­cal micro­scope with 3 len­ses (10x, 50x and 100x), a Lin­kam TS1000 attach­ment, a spec­tro­me­ter with two dif­frac­tion grids ope­ra­ting in the range of 90-3800 cm-1, a CCD detec­tor and advan­ced ana­ly­ti­cal software.

In addi­tion, there is a test stand at the Mate­rial Testing Labo­ra­tory for mecha­ni­cal alloy­ing (MA). These pro­ces­ses allow the alloy­ing of metal­lic mate­rials that are impossi­ble to obtain with other methods, e. g. non-equ­ili­brium alloys or alloys rein­for­ced with refrac­tory par­tic­les. Mecha­ni­cal syn­the­sis is car­ried out at LBM in a pro­tec­tive gas atmo­sphere, using a high-energy pla­ne­tary ball mill, adap­ted for very hard par­tic­les, such as tung­sten car­bide, yttrium oxide or alu­mi­nium oxide.